Hello, a few days ago i upgraded my cpu(Celeron D 351) to a new one, the dual core Pentium D 805. I have an Asrock 775x-esata2 mobo, 1 gig of ram and 80 gig sata with 350w power supply. So this is what happened: after i installed it it turned on normally, but then after it went into windows and all, it shuts down by itself, like someone pulled a power plug. So i tried again, same thing. I figured i didnt have enough power so i flipped the little red switch on the bakc of my power supply to 230V and tried again. Nothing, so i flipped it back and double checked everything. I did everything correctly (wiring, etc.) and i tried it again...this time it got worst. After the windows xp logo, it goes to a blue screen STOP 0x0000007b or something. The HDD light doesnt even turn on! I thought something was wrong with my hard drive so i tried to repair it by recovery console but the windows xp says it doesnt detect my hard drive. My BIOS detected it tho.

And so i went out of my way to buy a cheap HDD to try and it didnt even work for taht, same thing...STOP 0x0000007b. I then took my original HDD (the 80 gigs one) and plugged it into another computer and what do you know, it works. But after it gets to the windows XP logo, a blank screen stays and nothing happens. I then took the 80gig HDD and plugged it back into my original computer and still the blue stop screen. Can anyone help? (i never overclocked anything)

There's the 4-pin aux power connector tucked where you have those solenoid and caps, it is plugged in?

If it is and you continue to experience power troubles you should look into getting an adequate & stable PSU for your system.

thanks for replying and yes it is, it worked perfectly before my new cpu. And i tried switching to a 400W power supply, still nothing. It stops at the blue screen

If it worked fine until you changed the CPU, why are you suspecting the HDD? It *may* be a power supply issue but more likely, it's the CPU. Double check the HSF installation. Was a thermal pad pre-installed or did you apply paste?

The thermal pad was pre-installed and i'm pretty sure i did everything correctly. Because it didnt work i changed the parts back to my original rig with the celeron D. And it has the blue screen >.> I'm scared I broke the whole thing but im pretty sure its not the CPU. Theres gotta be a way to fix it since the parts (the HDD and CPU) worked on my other computer...

"I figured i didnt have enough power so i flipped the little red switch on the bakc of my power supply to 230V and tried again."

NEVER do that again...You're lucky it didn't totally fry when you did that. The 230V setting is only for those who live in Europe and parts of Asia.

really??!!? =O what do i do now? what fried?i flipped it like 3 times. Did my mobo fry?

Time to benchtest it.

take everything out of your case place the motherboard on the desk and leave in the processor and heatsink, ram graphics card and the psu connected to the motherboard. Use a screw driver and touch the 2 pins together where the power button cord would be connected to.

Now if everything works and no blue screens then you narrowed your problem down to other hardware that you haven't connected yet. if the problem is still happening then it's 3 things. your ram, processor, or motherboard. If I was a betting man i'd say it's either your motherboard or ram if you are still having this problem.

AMD Athlon 64 X2 4400+ OC 2.7ghz
2GB Dual Channel DDR 3200
Nvidia 7800GT
SATA II 2x 200gig 7200rpm 16mb cache RAID-0
Gigabyte Nforce 4 SLI

Thank you for replying Cobra_R but I'm not too sure on how to benchtest it. Could you clarify? If i take and unplug everything how do i turn the computer on?

your power button has a connection to it. There is a power cord that runs from the power button to a motherboard connection pins. you should have two wires in the power cord that connects to 2 motherboard connection pins. what you are going to have to do is take a screw driver a flat head and touch those two connection pins together to turn on your pc and then use your psu power switch to turn the pc off after you are ready to put in other hard ware. To turn it on again repeat the same process on how you turned it on the first time.

AMD Athlon 64 X2 4400+ OC 2.7ghz
2GB Dual Channel DDR 3200
Nvidia 7800GT
SATA II 2x 200gig 7200rpm 16mb cache RAID-0
Gigabyte Nforce 4 SLI

okay, i did what you said and everything was working fine until i plugged in my HDD and tried to log into windows. But this HDD worked fine on my other computer, i can't figure out whats the problem =/

You are using an SATA hard drive so try plugging it into another SATA slot and see what happens.

If you already done that. Try resetting your CMOS jumper as you may know this resests your bios to it's defualt settings and try pluging in the hard drive again. Some setting may have gotten screwd up in there when you put the new processor in.

If none of this works then buy a new motherboard because it will seem to me that something happened along the way that fired a circuit on your motherboard. could have been when you set it to 230v or it could have been that your motherboard wasn't staticly discharged when you were placing your new cpu in the motherboard. Athlough I doubt the changing of the volt on the psu to 230v caused it because you would get no boot at all, because it would have fired your motherboard power circuits.

AMD Athlon 64 X2 4400+ OC 2.7ghz
2GB Dual Channel DDR 3200
Nvidia 7800GT
SATA II 2x 200gig 7200rpm 16mb cache RAID-0
Gigabyte Nforce 4 SLI

Thank you, i will try resetting my CMOS now. I'll update with more info later.

"this HDD worked fine on my other computer"

If you took a working HDD with WinXP already installed on from another machine & transferred into this one, there's your problem. As you just found out, that does NOT work!

You can attempt a "repair installation", that *usually* works, but formatting the HDD & doing a fresh install of XP would be the preferred method.

no lol, my hdd originally comes from this computer. it suddenly crashed or something and now not even the windows xp cd will detect it. I tried to do repair installation and it saids taht it did not detect my HDD please press F3 to exit.

The hardware change (new processor) could have triggered the need for a repair install.

Did you change anything else at the same time? Add memory, etc.?

Skip

nope, just my cpu. BIOS recognized everything tho, it's just not booting into Windows. I get this blue error message for about half a second (took me a while to read what it said).
STOP 0x0000007b (0xF7c46524, 0xc0000034, 0x0) or something. I tried to google it but no luck

Take it to the shop! You're lucky it boots at all. There's no telling what all was damaged by your shenanigans.

Though all of the suggestions here have a little merit, this could be some sort of a compatability issue. I have an ASrock 775v88+ mb and also tried to install a pentium d 805 with almost identical results to this situation (computer began restatring at boot and hard drive was no longer recognized unless placed in another computer; in which case, all was fine).

Perhaps this is a problem with asrock mb's or something; I don't have another pentium d compatible board so I can't test this theory, but from what I have read, my problem is absolutely identical to this gentleman's. Any other ideas out there?

I would format and do a clean install befoe anything else. Hardware updates can always cause this sort of thing...

DFI Lanparty UT NF4 Ultra-D
AMD 64 3700+ San Diego
2 GB TEAM Xtreem PC3200 Poseidon 2-3-2-5
Powercolor X1900XTX
FSP Blue Storm 500w

If you dumbasses actually read the CPU support list on the Asrock website you would have realised that The Asrock 775V88+ does not support Dual core chips only Pentium 4 and Celeron D!!! Don't bother giving advice people without first doing research, that's what the internet is for!!! I build computers for a living and I have one of these boards so I know my s---!!! Get a damn motherboard that supports Pentium D by reading the CPU support list before you buy it! Every good Motherboard manufacturer has one on their website even Asrock!!!

Sorry my apologies, the first motherboard mentioned supports Pentium D but the 775V88+ does not! Switching the voltage switch on your power supply, WHAT WERE YOU THINKING!!! That in itself should have fried your motherboard! The fact that it still operates at all after that is amazing! A Pentium D 805 will chew 95 watt under full load, so you should have researched that and bought yourself a beefy power supply from the get go! As for Windows not recognising your Hard Drive that is because Windows XP does not recognise some newer SATA controllers and make sure you have your on chip SATA controller enabled in the BIOS and set to IDE or nonRAID if you are not using a RAID configuration! You should be able to create a SATA controller driver floppy disk for XP setup from the CD that came with your Motherboard on another computer! I'm sorry if my last post seemed rude but you really need to do some research and ask questions before you mess around with stuff like that!!!

Also after you have made a floppy disk with your SATA drivers on it for Windoes XP setup make sure to have it in the floppy drive and press F6 on your keyboard when XP Setup asks if you want to install any third party SCSI or RAID Drivers!