1
vote
1answer
84 views

Z87 Deluxe edition Won't boot with Core i7-4790K

The new motherboard, of a friend of mine, will not boot with his brand new Core i7-4790K processor. The CPU error LED blinks as soon as we power on the unit. Hadrien
4
votes
1answer
59 views

What is the CPU microcode?

Today after unpacking the initramfs file from my Linux /boot directory I found that it contains the GenuineIntel.bin file, and that that file is an image of what is called the CPU microcode. Then I ...
-1
votes
0answers
33 views

Not sure if it's my motherboard or CPU. Some insight?

I am worried that buying a new CPU may fry it if motherboard has problems. When I power on with the CPU I suspect doesn't work, there are no beeping sounds but the fans speed. There are no LED ...
1
vote
0answers
32 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
0answers
23 views

Computer not booting properly

I just recently bought new computer parts for my little brother (specs below). So he could play some games. however, the computer doesn't want to boot properly. It does boot, where all the fans spins ...
0
votes
1answer
37 views

PC not consistantly working after upgrading CPU

I have a PC with Asus P5B Deluxe motherboard, E6700 CPU (Core 2 duo) and 8 GB of ram (ddr2 800) I wanted to upgrade my CPU, and so I went to the motherboard's website: ...
0
votes
0answers
29 views

Failing CPU, PSU or Motherboard?

So i have a HP desktop and when I press the power button all sounds well (fans, hard drive) but then it turns right back off within 7 seconds. There are No beep Codes, or noises. So I am trying to ...
-1
votes
1answer
56 views

Diagnosing Motherboard/CPU/ (most likely) GPU

OK, so I am trying to salvage my Mum's old PC for which she had bought a new power supply. After that it worked for a long time. After that time, it wouldn't boot (fans would come on very loud, power ...
0
votes
1answer
117 views

CPU fan turns on and off repeatedly without booting

My PC has suddenly stopped starting up. On checking with case open, the CPU fan starts running when the power is turned on, but it stops after about 2-3 seconds, restarts again after about 2-3 seconds ...
0
votes
2answers
51 views

New computer build unable to start

I am building a new computer and I've encountered a problem; once my out of box build was done I tested the computer to see if it could start. It would only power on for like a second then shut down. ...
0
votes
0answers
50 views

Changed CPU and system doesn't boot. Put back old CPU, it doesn't boot either

Ok, this is my motherboard: GA-945PL-DS3 (rev. 2.0). When I bought this PC it came with Intel Pentium 4 3.0 GHz. Now, I bought new processor Intel Core 2 Duo E6700 2 x 2.66 GHz. I removed old CPU and ...
0
votes
1answer
88 views

Can a faulty CPU fan affect the screen

I have a Toshiba Satellite L650D laptop, which for some reason doesn't really want to work any more. Basically, if I start it up, the screen doesn't show squat. As far as I can tell it doesn't even ...
0
votes
0answers
202 views

BSOD crash. CPU fan turning on and off. The computer won't boot. Processor thermal trip error

One of my friend's desktop suddenly crashed and is throwing up random symptoms. The following is how the issues have taken place: The Operating System (Windows 7) abruptly crashed with a BSOD error ...
1
vote
1answer
302 views

How do I tell what component is preventing my computer from booting for the first time?

This is the build: Intel Core i3-4130T Haswell MSI H81M-P33 LGA 1150 Intel H81 CORSAIR CX series CX430 430W ATX12V v2.3 80 PLUS BRONZE ADATA XPG V1.0 series 4GB 240-Pin DDR3 SDRAM DDR3 1600 (PC3 ...
1
vote
1answer
98 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 ...
6
votes
5answers
286 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
131 views

Computer hung, when restarted, stated in BIOS that the CPU clock was decreased from usual clock/speed

At random times, while in idle time or gaming, the computer hangs, no mouse cursor movement, no BSOD. I then use the restart button on the computer. When restarted and entering the boot screen, the ...
0
votes
0answers
389 views

Enabling unleashed mode failed

I'm trying to unlock 4th core of AMD Athlon II x3 450 CPU on Asus motherboard and American Megatrends BIOS. However, after I enable Unleashed! mode in BIOS, and restart computer, the monitor doesn't ...
0
votes
0answers
129 views

Turns on but no boot OR post

Today I decided to upgrade my wife's computer for her: ASRock 990FX Extreme4 AMD FX-8350 4.0Ghz 8 core CPU 16GB Corsair DDR3 1066 I get all the parts in, hit the switch and get all the bells ...
3
votes
1answer
1k views

Why is my CPU cooler fan delayed at startup?

I've just finished building a new computer with one of those new-fangled Haswell CPUs; in particular, the Intel Core i5-4570. I plug in the power, turn it on, and watch as everything starts spinning ...
2
votes
1answer
732 views

New computer won't boot

I've recently purchased a set of components and set about building my own desktop. It is not booting and I am stuck. When I hit the power button, the fans spin, but that's all. There is no video. ...
0
votes
1answer
35 views

My CPU wont start until I un-plug and re-plug the power cable several times

My CPU wont start until I un-plug and re-plug the power cable several times either from the mains or from the back of the CPU. I have changed the power cable but no go....What might be wrong??
3
votes
1answer
93 views

Windows Sleep Mode - Hardware not booting up

I have a problem with my computers. It's mainly on my ASUS Eee PC Seashell 1215n Laptop, but other people I know have said that this happens to them too. Sometimes when I wake up my laptop, it turns ...
2
votes
1answer
213 views

Resurrecting an old computer. Powers on, does not boot

I have an old Dell Optiplex GX1 that I want to revive. If I plug it in, the power comes on. However, the power switch has no effect (can't turn it on or off, have to unplug it to stop power). I ...
0
votes
0answers
316 views

Computer stuck in a boot loop

I'm not positive what's causing my computer to be stuck in a boot loop where it turns on all the fans for about 2 seconds before restarting, but I do think I screwed up a couple of things and was ...
0
votes
1answer
538 views

No POST / BIOS after CPU change

I tried to upgrade my PC with a CPU change. The motherboard is a Gigabyte P35-DS3L, the old CPU is Core 2 Duo E6550, the new one is a Core 2 Quad Q9400. I had to to take out the graphics card and two ...
0
votes
1answer
92 views

Troubleshooting, GTX 670 + i7-3820

I've tried to figure this out on my own, but so far I've had no luck, so I now turn to the greater forces that be, ie. you guys. I'm sorry if this is in the wrong forum, but I couldn't decide where ...
1
vote
3answers
3k views

Computer won't boot after applying thermal paste

I don't know what's wrong. My computer was on a bench and I used thermal paste (probably too much of it at first) and my computer still worked. But after I put everything back in the tower it didn't ...
2
votes
1answer
4k views

Hardware issue: computer plays beep sounds at startup, and then turns off

Turns out that after moving, my computer got damaged somehow. I installed my computer 2 days ago. I didn't check the state of the hardware parts and turned the pc on recklessly, not realizing that the ...
2
votes
2answers
2k views

Boot up troubles, power related - system always stable once booted

I've got a system that's been causing me a lot of trouble over the last few months. Below is a somewhat lengthy saga of my experience with it but it should hopefully provide some thorough problem ...
3
votes
2answers
74 views

Limiting RAM and CPU cores

I want to limit the number of CPU cores and RAM which the OS sees. Is there any way of doing this in BIOS ? I tried changing the grub file with maxcpu parameter. Is there something which I can do in ...
1
vote
1answer
308 views

Computer starts for just a second and shuts down immediately

I have gathered all parts of my new PC and assembled them together. However, when I turn it on, the computer becomes alive for only a second or so, then shuts down. The lights flash, the fans start - ...
1
vote
1answer
6k views

Test for bad Motherboard VS bad CPU

I'm working on an HP Pavilion a6300f PC ( http://h10025.www1.hp.com/ewfrf/wc/product?lc=en&dlc=en&cc=us&product=3644689 ) that wont boot up. (no display, no beeps, no lights other than ...
1
vote
3answers
3k views

Computer suddenly shut down - won't start again

Last night my computer seemingly broke down completely. I wasnt looking at it when it happened, but I could hear the entire thing shut down. It was only idling in desktop at the time... Afterwards I ...
3
votes
5answers
5k views

Why would my computer start booting then suddenly turn off?

I removed the CPU heatsink/fan unit from my desktop computer and put it back. Now when I turn on the computer, it starts to boot, gets to where it starts checking devices, then just turns off ...