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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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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37 views

Sometimes I see black screen after windows logo, especially with cold boots

When I'm cold booting from my computer, this happens: Motherboard Logo > Windows 8 loading logo > Black screen. In the black screen, keyboard "num lock" key does not toggle the num lock LED. ...
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48 views

Troubleshooting processor upgrade, Paxville on Dell Precision 670

I've got a Dell Precision 670 with an XC837 motherboard and BIOS at version A07. I'm trying to upgrade this from using a single-core Celeron to a dual-core Paxville processor. When I install a single ...
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64 views

Computer won't start unless power is removed for ~2 hours

About 6 months ago I built myself a desktop. A few weeks ago the computer started to act strange, for example it wouldn't always give a video signal when it came out of sleep. Now the issue has ...
2
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64 views

Asus Z97 Mark 2, i7-4790 getting CPU graphics to work

This is a new build. I've been trying for two days to get the CPU integrated graphics to work. The motherboard has a "displayport" connector which I have connected to my Asus PA246Q monitor, also ...
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69 views

BIOS not reaching post

GT70 0NC-012US Issue: BIOS not reaching post Backstory: Several days ago,my slave HD started to lock up the OS with any related programs running from that disk. In an attempt to fix it, i used ...
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51 views

MemTest86+ bad adresses constant despite swapping sticks, processor/MOBO to blame?

(Sorry for the wall of text, but people seem equally critical of missing details) After about 2 years without trouble, I've been having issues recently with system instability, BSODs, random ...
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777 views

MSI Control Center doesn't save fan speed settings

My problem is that MSI Control Center, for fxa990-gd65 motherboard, doesn't save the fan speed settings and resets them every time you shut down / restart the PC. It even has the save/restore ...
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286 views

PC won't start unless I reset CMOS

Situation: My PC is dead in the water. Both power buttons (Case/MB) have no effect. If I pull the power cable, reset CMOS, reconnect the power cable, then press either power button the PC fires right ...
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296 views

Why can't my ASRock N68-S3 UCC based machine access the full capacity of 3TB hard drives?

I recently bought a 3TB Western Digital Green internal hard disk, but discovered that I could only access about 768GB of the capacity on my current desktop PC. After some investigation, I've traced ...
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54 views

Computer won't power on

Was working fine for over a year, now won't boot. LEDs on the GFX card and one on the MOBO labeled PWR glow when plugged in, but nothing happens when I push power and shorting switch pins does nothing ...
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1k views

Random BSOD crashes when all RAM slots are occupied

Although I'm a long term user of other StackExchange sites this is my first question on SuperUser, so please let me know if I've neglected any community customs I am experiencing regular BSOD crashes ...
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245 views

How to diagnose issue between mobo, RAID, and SSD cache drive?

Background This issue is happening on my custom-built desktop. Relevant specs: Motherboard: ASUS P8Z68-V PRO Utilizing Intel RST technology (application that uses unused SSD as cache) Processor: ...
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1k views

Stop the constant random reboots of my GIGABYTE GA-B75M-D3V

I've got some issues with a new system. It's rebooting constantly. The system consists of a: brand new: Gigabyte GA-B75M-D3V with F9 BIOS (latest) Intel Core i5-3470 Ivy Bridge 3.2GHz 2x 8GB ...
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126 views

Computer motherboard failure?

So, I am pretty sure this will be a unique problem One of my fellow employees took a cable with a RJ-45 jack on one end, and a USB on the other and thought it would be neat to plug the cable into the ...
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386 views

new pc build— CDROM not booting

I've just finished a new PC build using a Gigabyte GA-970A-UD3 AM3+ motherboard and SATA DVDROM and HDD. I've set up the bios to use the following boot order: CDROM HDD I know that the CDROM drive ...
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25 views

Graphics card fans very loud, no video/unable to boot

So let's back up a few months. I came back from work one day to find my computer on (I remote desktop to it occasionally) but my graphics card (Gigabyte GTX 770 OC-2GB version) fans running very ...
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60 views

Mainboard beeping for error but running fine - beep codes corrupt?

I traded CPU, PSU and Graphics Card with a friend. When I took his parts and build my PC everything works fine. When We tried to put my parts in his PC, the Mainboard did a non-ending 2 tone siren ...
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21 views

Update BIOS Z87X-OC Q-flash

I'm trying to fix some issues with my PC namely, the erratic CPU performance, power issues and graphics card malfunctions. I've been advised by the manufacturer of my PC to update the BIOS on my ...
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37 views

How to run an application in linux just before poweroff and after linux shutdowned itself

I have a embedded system that needs to be power off itself after shutdown. To power off, the Linux should send a command via an i2c to another device to power off the Linux board. So to shutdown and ...
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47 views

Asus motherboard with 'CPU_LED' on

First, Here are some pictures of what I'm seeing. Here is by build: CPU | AMD FX-8320E 3.2GHz 8-Core Processor CPU Cooler | Silverstone AR03 81.4 CFM Sleeve Bearing CPU Cooler Motherboard | ...
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59 views

SATA 6Gb/s drive only works in legacy mode (SATA 3Gb/s)

I've got ASUS Sabertooth 990FX mobo (rev. 1.0) with AMD SB950 controller for SATAIII drives and JMicron JMB362 for SATAII drives. I've got Intel 330 SSD hooked up to SATAIII (AMD) controller and it ...
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59 views

HP laptop doesn't power up

I am kindly asking for your help. I have an HP DV7T-6C00 laptop which doesn't power up at all. I have read various forum threads and they did not solve my problem that's why I'm opening a new one. It ...
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89 views

Memory not compatible with motherboard?

I've been getting BSODS on my computer and have tried everything that I can think of to find out what's causing... My motherboards memory compatibility list is: ...
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55 views

How to diagnose dual channel memory / motherboard?

I have ASUS P7P55-M with 12GiB of memory, but it sees only half of it: dims@sagittarius-a:~$ cat /proc/meminfo | grep MemTotal MemTotal: 6102272 kB Simultaneously, it is visible from OS ...
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69 views

My PC blacks out randomly. Screen says “No Signal”, fans and LEDs are running

My PC blacks out randomly. After running for maybe 1hr or so the monitor blacks out and displays "No Signal". Audio also stops and I am unable to turn off the PC with keyboard shortcuts. The green LED ...
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39 views

Optical drive delaying boot substantially

I've built a new PC with the ASUS H81M-PLUS motherboard, but the DVD drive that is connected to it by SATA delays the boot substantially: With drive connected: 30-40 seconds stuck on the black Asus ...
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49 views

Usb ports connecting and disconnecting

I know this is not the place to ask about hardware problems and solutions, but I can't search on google anymore... I've been for over 24hours searching on google about my problem and trying to get a ...
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93 views

MSI 990FXA-GD80 — Won't boot; no POST LED

I've got an MSI 990FXA-GD80 motherboard. As of yesterday, the power button will turn on the fans, but nothing else happens. Even the POST LED's on the bottom of the board don't light up. Any thoughts ...
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16 views

USB 2.0 Port Causing Weird Audio Artifacts on MP3 Player

I have a SanDisk Sansa Clip Zip 8 gb. A little while ago, I built a new computer, and so far everything has been working fine, besides the USB 2.0 ports on the front. The ports seem to work fine ...
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22 views

What's a Sun Ultra 20 motherboard code “44”?

The machine powers on, but the fans don't throttle back, no video, no beep codes. Motherboard LED is indicating "44", which according to my documentation is a "Reserved" code... No burst caps in ...
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390 views

Intel USB3 driver install fails

I've been trying to install the Intel USB 3.0 eXtensible Host Controller Driver (version 3.0.0.16 as supplied by the Asus web site) but it balks when it gets to the PCI bus. At this point the entire ...
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95 views

eSATA drives keeps disappearing, only reappears after reboot

I have one relatively fat PC at home, that I use as a server, a back-up drive included, and as my gaming PC as well. The Operating System is Windows 7 Ultimate 64 bit. I currently have an ASUS ...
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2k views

ASUS laptop stuck in splash screen loop. Can't access BIOS with HDD installed

I have an ASUS laptop (model u56e, windows 7 64-bit) that is baffling me right now. I was recently on a trip, laptop working fine, though partitioned SATA HDD a bit overloaded with vacay pics. On way ...
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335 views

So-DIMM to DIMM adapter?

I have some nice 4GB SO-DIMMs from a broken workstation laptop that I would like to put to use in my desktop. Would this be possible? I did a bit of googling and found a SoDIMM to DIMM adapter on ...
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132 views

Motherboard restores corrupt BIOS on a regular basis

I have a pretty new PC and I am having issues with it since the beginning. The components are: Motherboard: Gigabyte Z87X-UD3H OS: Windows 7 64bit When I turn on the PC it runs OK, no problems, ...
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131 views

Do SSDs have to have AHCI to maximize performance?

After my last post concerning my motherboard's RAID, I'm considering purchasing an additional dedicated RAID controller, but I have a few concerns about what to buy, because I'm facing yet another ...
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305 views

Computer failing to boot using a graphic card with the driver installed

I'm having some troubles with my computer. Yesterday I had a bluescreen about some graphic driver dll and couldn't boot the computer back. I swapped my graphic card for a backup and could boot the ...
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106 views

Will this RAM work with my Intel mobo (DX58SO)?

I'm planning to add three DIMMS so I have 12 GB triple channel. Memory is: 4GB Module - DDR3 1333MHz Part Number: KVR13N9S8/4 Specs: DDR3, 1333MHz, Non-ECC, CL9, 1.5V, Unbuffered, DIMM, ...
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113 views

HP M2N68-LA Motherboard graphics

I have a odd problem that I can not seem to fix, I have a motherboard M2N68-LA (Narra Series) from a HP Pavilion and can not seem to get any graphics working. I have Ubuntu Server 13.10 installed, the ...
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324 views

Why does my motherboard with SATA 2 (3 GBPS) port / cable not properly read a SATA 3 ( 6 GBPS) HDD?

I've an old G31D-M7 motherboard which has 2 x SATA2 Connector. I recently got a SATA3 (6GBPS) HDD (Seagate Barracuda 500 GB - ST500DM002) but when I try to connect to it, it takes a long time to ...
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50 views

Computer not booting

I've built a mining computer with an asrock h81 pro btc, AX 760 psu, Intel Pentium Dual Core G322 and 6* Gigabyte R9 270. I tried to boot it up without the graphics card. I plugged the screen directly ...
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3k views

asus motherboard: one long beep, 3 short beeps, one short beep

When my computer starts, monitor shows no signal, you can hear the computer trying to do something (almost sounds like starting a car with multiple tries). Then I hear one long beep, three short beep, ...
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245 views

Modify Windows 7 for unsupported motherboard BIOS

I have a board that supports only XP and Server 2003. It has been EOLed, so the manufacturer has not, and will not, update the BIOS for Vista and above. W7 has the Serverworks HT1000 chipset driver ...
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659 views

how to disable hard drives in UEFI bios?

sometimes I need to disconnect a hard drive. I have to open my computer and unplug the sata power cable. I am wondering if its possible to disable the hard drive in UEFI bios. I am using asus p8p67 ...
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93 views

Power SW button doesn't work

Yesterday I built a computer myself. The computer is able to boot by pressing the power button on the mobo. However, the Power Button on the case isn't working. Everything is setup by following the ...
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33 views

Any guarantee that replacing the ATI graphic chip works

Im having a Dell studio 1558 laptop that was purchased 4 yrs ago and now im having a problem in booting the laptop.I gave it to a service center and they said some problem with ATI graphic chip and ...
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89 views

How do I find the storage capacity of the E²PROM chip on my motherboard? How much space is needed for UEFI to be implemented?

I'm looking at a solution for upgrading BIOS to UEFI on a motherboard that doesn't natively support UEFI. Another user, Rod Smith, replied to a question as to how this would be done stating: "It's ...
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31 views

PSU replacement made the whole PC fail

What happened is a long story, but I'll try to be as short as possible. My PC failed without warning yesterday, I suspected my PSU (an Antec HCG 520w), so I bought a new one (Corsair RM 650w) and I ...
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46 views

How to control PCIe power?

Is there any consumer-grade motherboard (for Intel i3/i5/i7 CPUs) that lets me physically power on/off PCIe slots? PCIe slots are on motherboards, so I guess a motherboard can easily power up/down ...