1
vote
0answers
14 views

Computer crashes twice/thrice before booting into windows

I need help. i built a PC, and it behaves very strangely. When i press the power button, the lights come on, fan maxes out, HDD spins, bios shows up etc and then it immediately crashes (powers down) ...
1
vote
0answers
30 views

How is the burned BIOS/firmware code executed from the CPU? [closed]

Let's use simple Intel and "generic PC" memory-mapping/engineered boards to get the gist of this. BIOS/firmware is hardwired to a certain address; an address from which is immediately ...
0
votes
2answers
59 views

Does it cost extra to support more memory in bios?

Recently came across couple of low end machines with windows 7. They have 3 GB ram installed, however the bios of these machines does not support more than 4GB. I can understand installed memory ...
0
votes
1answer
34 views

PC Continues fast short beep or Continues long beep

I hope I can ask this one here. Can Anyone please help me on this. I was trying to format my pc since the bootmgr is missing., MY pc has a motherboard Asus H61ME. I have a Video card GeForce GT 620 ...
0
votes
1answer
77 views

System doesn't function properly without hardware reserved memory

I've got a Foxconn Renaissance motherboard, and I'm using the newest supportable version of BIOS, 6GB memory, 2GB memory on my GTX760 graphics card, and WIndows 7 x64, Unfortunately, there's no ...
0
votes
0answers
20 views

Guess correct stable memory/RAM CAS?

I have several APACER 8GB UNB PC3-12800 CL11 but i could not find any document about correct CAS . Usually the CAS written on piece of paper which attached to RAM . Motherboard bios shows the part ...
1
vote
0answers
47 views

How to read what's written in a memory cell [closed]

Fairly simple question, is it possible to read what's stored at a given memory address? e.g. you can type in 0x000f0000 and you can see what data is being held at that address. Thanks.
0
votes
1answer
82 views

RAM issue: Laptop fails to boot with two different RAM modules?

My laptop (scan report from crucial website) currently has 4GB memory: 2GB onboard, and a SO-DIMM module, 2GB 1066MHz, inserted in the ONLY slot the laptop offers. Here starts my odyssey: I bought a ...
-1
votes
1answer
77 views

What memory modules work in a Intel DP55WB?

I have an Intel DP55WB Motherboard with an i3 processor and two 2GB RAM cards (total 4GB). I went to a store with my CPU to buy a 4GB RAM card in order to have a total of 8GB. The salesman ...
0
votes
1answer
29 views

What sort of tests does POST run on ram?

This is loosely related to a homework assignment I'm currently doing, for a part of it I am trying to work out what sort of memory tests a standard POST test will run on ram, i.e: the ways it will ...
1
vote
1answer
136 views

How BIOS extensions (option ROMs) work?

How do BIOS extensions (option ROMs) work? I understand that an installed device may have it's own BIOS that adds features to the system but I'm not sure of how they are set up. I keep reading the ...
13
votes
1answer
2k views

What hardware device used to eat up 1.4GB of my 4GB RAM, and now suddenly after no hardware changes eats up 2.2GB?

This is more or less a continuation of What hardware device eats up 1.4GB of my 4GB RAM? While I have more or less accepted the solution there that for some mysterious reason, after a BIOS upgrade ...
2
votes
1answer
204 views

PCI BAR memory addresses

Quick question, I was reading the OSDev Wiki page regarding PCI and it says the following - Base address Registers (or BARs) can be used to hold memory addresses used by the device, or offsets for ...
2
votes
1answer
143 views

How are reserved and ACPI NVS memory sizes counted?

My PC has 8GB of memory installed and is running Win 7 64-bit. I ran a tool named fwmemmap that shows the firmware memory map for the system but it's showing around 60MB more than is physically ...
0
votes
1answer
80 views

Dell Poweredge 2850 RAM

Dell reports that 8GB is the max but Windows System spec tool indicates 16GB possible. Has anyone actually been able to add more than 8GB to this motherboard and actually have it report more than 8GB ...
0
votes
0answers
24 views

RAM strangeness on brand new ASUS K55N [duplicate]

Not sure if this is the right Stack Exchange site, but I bought a brand new ASUS K55N laptop (6 GB RAM) but it says only 1.46 GB is usable. Info: Windows 8.0 x64 System reports 6 GB but only 1.46 ...
0
votes
1answer
108 views

What is a PEG Buffer Length?

Since no one is helping me on my previous question, I'm scavenging my BIOS: What is the PEG Buffer Length? I tried looking at my computers manual but it informs me that it is infact: A PEG Buffer ...
2
votes
1answer
150 views

Howto fix RAM Utilization in BIOS? [duplicate]

Begin: Windows 7 Home 32-Bit I addded 4gb of RAM to the computer (3.12gb of 8gb Usable) I upgraded my PC to: Windows 7 Professional 64-Bit Added New Hard Drive Added New Graphics Card End: Windows 7 ...
0
votes
1answer
81 views

New build won't boot to BIOS, continuous sets of 3 long beeps

I have an ASRock z87, with 1 stick of 8GB ram, GTX 770 GPU, a corsair hx750 PSU and an i5 3.4ghz processor, all of which are connected properly. Every time I boot from replugging my PSU in, it boots ...
0
votes
1answer
66 views

PC 1 Long 2 Short Beeps, No BIOS

I just built a PC and it just makes 1 long and 2 short beeps. I'm pretty sure it's not the graphics card because it is working fine with all fans on and pcie ports work. I tried both ports for ...
0
votes
1answer
93 views

System not booting after RAM upgrade

I have purchased an EVM DDR2 1GB 800 RAM (EVMP1G800U68D) today and found that my PC is not booting with the new RAM. I already have an APACER PC2-6400 1 GB RAM installed. When I insert only my old ...
0
votes
0answers
130 views

How is the NVRAM/EPROM which contains the firmware placed and used

From this link - Chapter 9, section 9.1.4, it says: The first instruction that is fetched and executed following a hardware reset is located at physical address FFFFFFF0H. This address is 16 ...
3
votes
1answer
2k views

Who loads the BIOS in RAM during computer bootstrap

When the computer starts up, the code in BIOS is executed first. However, how is the code in BIOS loaded into the RAM for execution ? I have referred to this question - Is BIOS read from the BIOS ...
2
votes
0answers
218 views

Sony Vaio VPCEE2E1E memory upgrade issue

I own Sony Vaio laptop VPCEE2E1E and I recently upgraded RAM MEMORY from default 3GB to 4GB after that operation I'm facing serious problem with performance.Windows shows that I have only 1.74GB ...
0
votes
2answers
192 views

Steps of changing from 32-bit OS to 64-bit and changing RAM?

My laptop is Lenovo T400, whose CPU is 64-bit and RAM is 1x2GB. When I bought it, it already had 32-bit Windows 7. Then I partition the hard drive and install 32-bit Ubuntu 12.04 alongside Windows 7. ...
0
votes
0answers
36 views

RAM Specifications / HDD specs / System Compatibility?

couple of questions: I have recently acquired 8 older sticks of RAM, quite small individually... Pcm 256MB Pc-2100 (2 of these) D3 - 256 MB DDR - 400MHz - CL3 256MB DDR PC3200 256 MB, DDR, 400MHz, ...
0
votes
0answers
262 views

Reducing hardware-reserved memory

First, I'd like to tell you the components inside my computer, so there will be no confusion later on: •Motherboard: MSI 970A-G46 (AMD) with click-BIOS II •Memory: Crucial Ballistix Sport 8 GB ...
1
vote
1answer
92 views

When modern computers boot, what initial setup of RAM do they execute, and how does it exactly work?

I know the title reeks of confusion, and some of you might assume I am just wondering about how the computer boots in general, but I'm not. But I'll sort this out for you people now: 1.Onboard ...
0
votes
1answer
665 views

Half of installed RAM is hardware reserved

After a rather arduous and convoluted series of problems that left me without a desktop for ~80 days, I've finally got the thing up and running, having replaced the power supply, motherboard, graphics ...
0
votes
2answers
868 views

Hungry hungry BIOS: why do I have less than 4 GiB of memory?

I thought I had 4 GiB of memory, but just to be sure, let's ask the BIOS about that: ζ: sudo dmidecode --type 20 # dmidecode 2.12 SMBIOS 2.6 present. Handle 0x000B, DMI type 20, 19 bytes Memory ...
0
votes
0answers
62 views

Checksum Bad error on boot

Recently I inserted a new 2GB ram in my motherboard, and got Checksum Bad error on bootup. Upon reading other forums I assumed my CMOS battery must have been dead. I replace this with a new one and ...
1
vote
0answers
336 views

Vaio VGN FW41j/PCG-3H1M black screen with 8GB DDR2

I have a Sony Vaio VGN-FW41j(PCG-3H1M) which I configured and bought in 2009 on the German Sony Website. The relevant specs are: CPU: Intel Core2Duo T9800 GPU: AMD/ATI Mobility Radeon 4650, 1GB DDR3 ...
6
votes
5answers
283 views

How is a byte(s) loaded from a secondary-storage device in to RAM upon bootup, if RAM supposedly already contains bits in capacitors?

This has been on my mind today. If RAM's ICs contain bits stored in capacitors sitting there, how can you pull bits from somewhere and put them where something already is? For example, on bootup, ...
0
votes
1answer
210 views

Memory with incorrect voltage for motherboard

I just bought an Intel DP35DP motherboard. Multiple sites tell me that only 1.8V memory works. I have 2x1GB sticks of 1.9-2.1V RAM, then another 2x1GB of 2.1V RAM. The BIOS does detect all 4GB of ...
3
votes
1answer
465 views

Added a total 12GB RAM to laptop, but only 3.2GB is usable

I have an HP Pavilion 15Z e000 x64 with Windows 8. It shows that I'm using less ram after the upgrade than before. The BIOS is hardware reserving 9.8gbs
0
votes
2answers
154 views

Frequency of RAM

I have a very old system HP compaq dx2080. It had 1GB of RAM. I recently bought a EVM DDR2 1 GB PC RAM which had a clock rate of 667 MHz. I have dual booting windows 7 and 8. When I installed it, ...
1
vote
1answer
801 views

ASUS S400CA BIOS Upgrade-RAM doesn't work anymore

I have an Asus S400CA laptop and today, I upgraded the BIOS firmware from version 203 to 209 using the Asus Windows flash utility. Flashing was successful and even the verification was OK. So, I ...
0
votes
1answer
233 views

Not Booting: One short beep at first and one more after all device checks

There is the correct one short beep before POST (which is the expected behavior as per the motherboard manual). The problem is once it says it has found the HDD etc, it gives one more short beep and ...
0
votes
1answer
489 views

Windows fails to start after RAM upgrade

I have a alienware m11x r2 and I recently bought some new RAM for it. However after installing it, when windows boots up a "Windows fails to start" page appears. I am then giving the option to repair ...
4
votes
3answers
683 views

Why do my OSes only recognize 3 GiB of RAM?

Okay, I have 4 RAM slots in my computer - I'd stocked it with 2 2-GiB sticks, and 2 1-GiB sticks, but my OS only showed 3 GiB. This occurred on 32-bit Windows, 32-bit Linux, and 64-bit Linux. The ...
1
vote
1answer
166 views

How to activate the inactive RAM in a server?

In a Dell Precision server, there are 8GB RAM. The OS is Windows XP 64-bit. Originally, everything is working fine. Both BIOS and Windows are able to detect 8GB RAM. One day when I power up the ...
0
votes
1answer
272 views

Installed new RAM, but computer now runs slower

My motherboard has four slots for RAM. Three of these contain identical StarRam 1Gb DDR2 667Mhz sticks, and the fourth had been unoccupied. I decided to buy a fourth stick for this slot, and since ...
5
votes
3answers
123 views

Am I doing the right thing to overclock this?

This is a follow up to this question. I bought the motherboard mentioned in the question and a 2133 MHz RAM that does figure in the memory compatibility sheet of the board. After assembling it runs ...
1
vote
0answers
75 views

Asus P8Z68 Deluxe Memory Disappeared

There was a time when they where working(16 Gigs-4 x 4GB dual chips which is on the vendors list), but now only 8GBs are seen by Windows 7 Ulti/64bit. I have just reinstalled everything, Windows, the ...
2
votes
1answer
285 views

Computer Randomly Crashes to Black Screen, sometimes fails to post

my computer started crashing to a completely black display where it would try and restart immediately. First it was happening during a game only and i thought it was some memory leak within the game ...
2
votes
2answers
1k views

Setting memory timings in BIOS manually - modules have not been recognized

I have a system with Motherboard: ASUS P8B75-M and 4 memory modules: Geil 8GB DDR3-1600 9-9-9-28 (link) Unfortunately, BIOS (the latest) recognizes the memory as DDR3-1333 9-9-9-24. I tried both ...
1
vote
0answers
77 views

Gateway LT210 wrong ram size reported by BIOS after restart

Just upgraded a Gateway LT210 from 1GB to 2GB, BIOS 1.26 When it boots, 2GB are recognized by both Bios and Windows. This is consistent, I can do it any number of times. However, if I reboot ...
0
votes
1answer
173 views

Macbook 2.26 unibody late 2009 model 6,1 comes 1066MHz RAM, can it run 1333hz

I am not asking if I put in 2 4GB modules of 1333MHz DDR3 RAM will it run without glitch, but instead I am asking will this Hz of am run at 1333hz without issue so the additional benefits of paying ...
1
vote
0answers
157 views

OC'ing a Sapphire 7950, problems with memory clock

I bought a new rig with sapphire radeon 7950 flex w/ boost. Good scores initially in 3dmark 11, around 7300 stock. Problem is, as soon as i start overclocking, issues arise. the core clock is at 860, ...
0
votes
2answers
1k views

Only half of RAM is recognized by BIOS

I got a Gigabyte GA-P35-DS3 motherboard. Some time ago I noticed that Windows only showed 2GB instead of 4GB. I don't know exactly what caused it anyway. I tried putting in each of the 4 x 1GB RAM ...