The motherboard or mainboard is the central printed circuit board (PCB) in many modern computers and holds many of the crucial components of the system.

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Why does my computer beep when I turn it on? What are these beep codes?

Due to the amount of beep codes a PC can give, there are many questions on Super User about beep codes! I'm hoping this post will help to provide a community answer about all (dare I say all?) beep ...
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How does Motherboard and CPU affect RAM choice?

I am seeking advice on which memory to use with my motherboard and CPU. Below are my components and some relevant information extracted from their official websites. NOTE: Although this is a very ...
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How can I find out what motherboard is in my computer?

I want to find out the exact model of my computer's motherboard so that I can see what sort of memory chip, graphics cards and other components it supports. I'm using Windows 7 Ultimate 64-bit.
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A PCI Express 3.0 Video Card into a PCI-E 1.0 x16 slot

Perhaps I'm trying to push my mobo too hard, but I think I have read that PCI-e 3.0 is back compatible to previous PCI-e specifications. But 3.0 into a 1.0, is it possibly asking too much? I'm ...
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How to troubleshoot a computer not booting up when powered on?

I can turn on my computer and sometimes it will boot up just fine. After a while of use, days or even a week, when I try to turn it on, it powers up, in that the fans spins up, the power indicator ...
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What happens when more RAM is installed than the motherboard supports?

I have a free RAM slot and some spare memory that will fit my computer. However the problem is my motherboard only supports 2GB and I have 2GB installed. What would happen if I plugged the spare ...
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Why should I install hardware drivers if my computer is working fine?

I've just installed Windows 7 on my PC. I went online to look for drivers. For my motherboard, Foxconn offers LAN drivers, on-board audio drivers, and chipset drivers. And for my graphics card, ...
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Any way to tell apart a CPU defect from a mainboard defect?

I have a fairly modern desktop computer, an AMD Athlon II X2 based silent PC, that does not work. When turned on, it will start physically (all fans are rotating, disks start up...) but not give a ...
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5answers
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Can I use an onboard and pci vga simultaneously?

I have an old machine I'd like to get running with dual monitors. The pci vga only has only 1 output port. However, I have another output via the onboard video card. Can I leverage both video cards to ...
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3answers
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What limits a motherboard from supporting more memory?

My specific question is with the ASUS M3N78-VM motherboard that my home server uses. I currently have 4x2GB installed for a total of 8GB but I was hoping to upgrade to say 16GB (4x4GB). The official ...
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5answers
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Is it possible (and safe/reliable/non-damaging) to use a 20-pin ATX PSU with a 24-pin ATX motherboard?

I have a reasonably-decent old 20-pin PSU which I want to use on a newer 24-pin ATX motherboard. I see that the ATX page on wikipedia mentions that 24-pin ATX is backward-compatible, and I can find ...
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Which steps are needed to change motherboard on Windows 7 without reinstalling?

I am planning to upgrade my Sapphire AM2+ Motherboard (Chipset 780G) with a new MSI AM3 (Chipset 785G). I don't want to format and reinstall Windows 7. I have heard that with Windows XP is not that ...
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Does a modern PC require a graphics card to run?

As I can remember, on old systems (Pentium II or III) it was not possible to boot and run the PC if the graphics card was missing (AGP cards were used in those days). Many years from then, I'm ...
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1answer
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What's the difference between SATA and SATA-II (3.0 GB)?

What's the difference between SATA and SATA-II (3.0 GB)? Specifically, if I'm shopping for a new (budget, so not new-new) motherboard, do I need to take into consideration if it supports SATA-II? ...
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4answers
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Switching motherboard without new install?

I need to replace my current motherboard with a new one, no other parts are changed. Must I format my harddrive and reinstall windows, or can I use the old installation and let windows install the ...
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4answers
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What will happen if I install more RAM than specified in manual?

I just installed a new motherboard, MSI K9N Neo V3 with an Athlon X2 4400+. I bought a 2GB stick of RAM (http://www.newegg.com/Product/Product.aspx?Item=N82E16820220228), with the intention of ...
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Installed RAM 20 GB (16 GB usable)

I have Windows 7 Home Premium (64 bit) OS installed. My motherboard is able to handle up to 32 GB of RAM. I recently upgraded my computer to 20 GB of RAM, but the computer says installed ...
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high pitched whine from newly built PC

I've just built a new PC: Asus P6T Deluxe v2 motherboard i7 920 Sapphire HD 4670 Passive heatsink Corsair 620hx portal supply Antec P183 case Sometimes when I turn it on, there is a high pitched "...
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How do I interpret the Asus motherboard LED and beep patterns?

What are the canonical meanings of the different DRAM_LED, power button and beep patterns prior to BIOS POST on Asus motherboards? My manual and miscellaneous web searches have turned up nothing but ...
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2answers
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Raid 0 - what happens with the data when hdds plugged into another motherboard

I am buying a new motherboard Asus M4A785TD-V EVO to replace the Asus A8N32 which has recently went dead. The original motherboard has a NVIDIA NVRaid controller which I was using to strip (raid-0) ...
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PSU failing or Mainboard failing?

I am having some troubles lately powering on my desktop workstation. While starting up the PC after being off for hours (usually at least 8 hours) it randomly fails to do so. What happens is that : ...
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I have a 3.3 Volt PCI ethernet card working on a 5 Volt PCI slot. How is it possible?

This is the design for PCI slots: As you can see, there are 32/64 bits and 3.3/5 Volts. For what I know: 32 bits PCI cards can work in 64 bits slots of the same voltage. 64 bits PCI cards ...
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3answers
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CPU temp very hot in BIOS but okay in RealTemp/Speedfan

I just built myself a new i7 2600k system with an Intel DP67BA motherboard. Booted into BIOS and was alarmed to find Processor temp reported at 75 C, and steadily rising... sat there while it rose to ...
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If a motherboard doesn't explicitly support a RAM frequency, is still compatible?

For example, my Asrock P67 Extreme4 says this: Supports DDR3 2133(OC)/1866(OC)/1600/1333/1066 non-ECC, un-buffered memory Is RAM clocked at 2400 MHz compatible? Will the performance be downgraded ...
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I want to install more than the supported amount of RAM on my PC. Is it likely to work? [closed]

I have a Shuttle SG32G2 PC that I'm using as a small home server. It has two 240-pin DDR2 RAM slots, and officially supports 2GB per slot, for a maximum of 4GB of RAM, which I already have installed. ...
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3answers
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Is it better to have 4GB RAM in dual channel or 6GB as single channel?

I know there a lot of posts about ram but I'm still confused about it. I'm building a new system and because it was cheaper, I bought a 6GB kit from Corsair. So I'm wondering if I would be better off ...
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2answers
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Can I mix different RAM modules in PC?

I have 4 RAM slots on the motherboard P5K. At the moment I have two 1GB RAM modules and two 2GB RAM modules. Everything is working fine. Can I buy one 4GB module and put it instead of the 1GB module?...
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2answers
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How to boot computer without any video card

I have a pc with centOs installed. I want to treat it as a server. Then I remove the video card from that pc , but I can never boot it again Motherboard: Gigabyte z77 d3sh CPU: Xeon e3 1230 ...
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System failure - need diagnostic recommendation

I have big problem with my computer. Configuration is: Intel i7 + 6x2GB OCZ DDR3 Motheboard: Asus P6T Deluxe V2, HDD controller configured to AHCI Main drive: OCZ Vertex 2 (SSD) - contains all ...
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Can I safely connect a USB 2.0/1.1 internal pin block to a USB3.0 motherboard header?

I've been working on my new PC build with the GA-Z77X-UD5H-WB WIFI motherboard. This board comes with a wifi/bluetooth card that goes into a PCIe x1 slot... but the card also wants to be connected to ...
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Upgrading motherboard without reloading OS

This question is an offshoot of soemthing I asked earlier: Disable "Auto Restart after BSOD" from Command Line Is there a way to wipe out current motherboard drivers on the HD so that you ...
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Onboard RAID vs Software RAID

My motherboard, an Asus M4a79t Deluxe, advertises RAID 0/1/5 capabilities. My limited understanding is that onboard RAID is better than software RAID. Is this necessarily true? Is an onboard RAID ...
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Upgrading laptop RAM [duplicate]

(This question was originally asked for my specific laptop: Dell XPS 15 L502X. But it seems that understanding I gained from the upgrade experience I am able help my friends to decide upgrading RAM ...
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Role of Anti-static wrist wrap, Applying thermal solution , cleaning if spilled , and other necessary precautions, protecting your motherboard

Hello I am a newbie in computer hardware, I am little bit confused on How much Thermal Solution is to be used. Also where to put thermal paste on the heat-sink or processor or on both? I read there ...
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low-power motherboard for windows home server

Firstly - I've used search, I've run through all the topics tagged with these ones, but couldn't find anything satisfying. I'm trying to build a home server machine, which should be a low-power ...
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1answer
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Resetting Bios Password on ASUS Transformer T300L

So, I have a ASUS Transformer Book T300L. I usually set a pass on my BIOS just in case (I'm a paranoiac). This time I tried to set it, introduced it slowly to see I introduce it correctly, confirmed ...
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How can I fit 6 7970 Graphics Cards in one computer?

Okay, based on my previous question, it turns out I can find a motherboard to support 6 PCI slots and therefore 6 GPUs. But now I want to use 6 GPU's, specifically, the Radeon 7970. Obviously, they ...
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How to reset bios/rom to factory setting if computer do not even run

This is the continuation of How do I reset BIOS to user factory setting Things are working. I am finally able to login to windows. With a big cactch. I was concern I didn't flash my rom correctly. ...
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Upgrading a motherboard and keeping old Windows 7 installation

I recently upgraded my motherboard from a Gigabyte 78LMT-S2p to a Gigabyte 990FXA-UD3. When I tried booting up Windows it blue-screened, and after some research I learned that it has something to do ...
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Asus P7P55D-E LX motherboard — over 16GB RAM?

We have a FreeNAS server with a P7P55D-E LX motherboard. We've added a lot more disk space since building, and need to upgrade the RAM. Specs say 16GB is the max ... (4x4GB) ... but is this true ...
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2answers
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Does a motherboard have to support 64-bit or is it just the CPU?

Do I need to have both components to support 64-bit, motherboard and CPU. Or is it just the CPU that matters?
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Is a DDR3 MB compatible with DDR2 RAM?

If a motherboard's specifications say it supports DDR3 SDRAM sticks, would I be correct to assume it is also compatible with DDR2 RAM? Am I wrong, or does it depend on the motherboard?
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Black Screen when Computer Boots

I'm having a serious problem with my computer; I think I've narrowed it down to the motherboard, but I'd like a second opinion before I spend the money. I have no idea what's wrong. Before I moved ...
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Power cycles on/off 3 times before booting properly from cold start, no other issues (New System)

Relevant Specs: Sapphire 5850, core i7 920, Seasonic x750 power supply, ECS X58B-A2 mobo. From a cold boot, meaning all power totally disconnected at the wall, the system will power on for less than ...
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PC hangs with striped screen and then three long beeps on start-up

Recently the following thing happened to my PC a couple of times: Screen was as if covered with black and white stripes with a distinct square in the middle and the PC was not responding to input. ...
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3answers
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I can't update my BIOS because the current version is an empty string

I am using an Intel D945GCCR motherboard. I want to update the BIOS but the current installed BIOS has an empty string for the BIOS version which causes an error and prevents me updating. The error ...
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2answers
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How safe is it to 'mix' RAM?

I have a new Qosmio X70 laptop and it has 4 dimms. 2 of the dimms are on the under side of the motherboard and it will be quite difficult to get to. The manufacturer states that it is DDR3L 1600 MHz. ...
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3answers
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Ethernet Port Troubles

A copy of an email I sent to company I bought my PC from last December. Does anyone else have any further suggestions? Basically yesterday my Internet connection went down, and my diagnosis ...
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c000021a BSOD on Windows 7 boot

I guess I can't since I'm getting the error message: The version of System Recovery Options is not compatible with this version of Windows you're trying to repair. Try using a recovery disc that ...
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Do motherboards still need washers?

Do I still need to use washers for a motherboard? I've just recently gotten my hands on an MSI 770-G45, and I noticed the spots on the board where the screws are supposed to go have no metal around ...