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System unstable. Help!

addyngan

n00b
Joined
Jul 12, 2004
Messages
9
Hello,

My system has been unstable the past few days and i have done a lot trying to find out why . but now it seems to be getting worse and worse, and i am wondering maybe the MB itself is defective.

First of all, my system config: P4 2.4C, P4P800 Deluxe, Maxtor 160GB, 2x256MB Corsair PC3200C2, Geforce Ti4200, WinXP Pro. This system has been running for about a year without any problem, and i never overclock.

A week ago, when i was doing some work, it suddenly freezes. (mouse doesn't move, no bluescreen). After that windows cannot boot. (well it shows the logo for a while then freeze) Since then I've reinstalled windows, (which didn't help). Then two days ago, i swapped the Corsair memory with two sticks of kingston valueram 512MB. It works well for 24 hrs( I was running folding + prime95), but then it bluescreen again. i also tried booting with another HD which also has XP PRO installed. I can boot safe mode, but with the normal boot it will freeze as well.

Today, i unplugged all my HD and was trying to boot from floppy. it fails in the middle of booting. After some more rebooting, i am able to boot from CD, and i try to reinstall windows. But the windows setup gives me a bluescreen 2 minutes into setup. Trying it a couple more times, i am able to install windows. However, at some point, in windows i am not able to access my HD connected to the VIA RAID controllers. Also the 3com network controller failed.

As i have tried two sets of memory, i am pretty sure this is not about the RAM. For the kingston memory, i have run memtest for >10 hrs and no errors. And by the nature of the freezing/crashing it doesn't seems to be HD related either. I am wondering if it's the CPU, the MB or the PSU. (graphics card? any chance?)

Provided i don' t have a spare CPU/MB/PSU, how should i go about finding out which part is defective?

If i can be 90% sure it's a MB defect, i will probably just get a new MB. I can't afford to buy MB+CPU+PSU though..

PS:
Other weird behavior: no beep at POST, cpuz/sisoft report memory timings of 2.5-3-3-6 while i set it to 3-4-4-8.

Any suggestion would be appreciated. Thanks!!

Addy :confused:
 
In my experience, a failing PS has almost always been the cause of the stability issues you are having.

What brand is it? How long have you had it? You don't have any friends that can load you their PS for the sake of testing it?

BTW, if it is a failing PS that is causing the troubles, you could very well end up replacing a lot of hardware, if you catch my drift.
 
Thanks for replying! I have the Antec 380W PSU that came with the Sonata case, and i didn't believe a well-renowned brand like antec will break down in 1 year. But i could be wrong. I will test it tonite with another PSU.

(But as you suggested, a failing PSU might have destroyed some other components of my system.. so I may not be able to tell whether it's caused by the PSU if another PSU doesn't help..)

Addy
 
[font=Verdana,Arial,Helvetica][size=-1]Hmm.. i removed the sound card (an Audigy2 ZS) , and now the system seems completely stable. (well folding+prime95 for 1.5 day). But do you think this is due to the sound card went bad? or still potentially a MB issue?

Addy
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[font=Verdana,Arial,Helvetica][size=-1]Hmm.. i removed the sound card (an Audigy2 ZS) , and now the system seems completely stable. (well folding+prime95 for 1.5 day). But do you think this is due to the sound card went bad? or still potentially a MB issue?

Addy

[/size][/font]
 
did you disable the onboard audio on that board, maybe its having a problem sharing the irq?
 
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