MAJOR CRISIS, COMPTUER WON"T BOOT

[clkio]

I just bought a brand new case, and a brand new thermalright xp-90 heatsink, I just finished removing everything from old case and putting it in the new one, also finished installing the new heatsink on the cpu. but the computer won't boot. The screen is just blinking, and I also notice that the cd-rom turns on and off, on and off, and so on. what could be the problem?

 

[YOyoYOhowsDAjello]

We get a "MAJOR CRISIS" about once every half hour here

Just having switched cases makes me wonder about possibly shorting out on the case. Before you worry about that though, try resetting CMOS (easiest first). If the fan giving an RPM signal to your board?

After that, try disconnecting everything you don't need to post. Meaning keep motherboard, CPU, ram, vid card, powersupply and then try to boot again.

Try a single stick of ram if you have two in.

If you still have no luck, try taking the motherboard out of the case and placing it on something non-conductive (like a piece of cardboard). and see if it will post with the items mentioned above only.

 

[clkio]

You are getting somewhere here. Let me point out something. I have a giga-byte k8n pro, and in order for me to use the xp-90 heatsink, i had to by a new backplate, the backplate was metal tho, i have no clue why, now you guys think that because its metal, and its touching the otherside of the case, its making a short?? if thats the case how can I fix it?

 

[YOyoYOhowsDAjello]

Originally posted by: clkio
You are getting somewhere here. Let me point out something. I have a giga-byte k8n pro, and in order for me to use the xp-90 heatsink, i had to by a new backplate, the backplate was metal tho, i have no clue why, now you guys think that because its metal, and its touching the otherside of the case, its making a short?? if thats the case how can I fix it?

There was some thread a few days ago about just this problem I think... a backplate causing a short on the motherboard.

I don't remember how it was resolved. Maybe if you do a search something will pop up.

 

[clkio]

so you think thats the problem tho? because I can't find anything else. I did reset the CMOS. the only thing left will be removing the board and placing it on ccardboard now> one more thing, I just did some research, to screw in my board, I just use normal screws, nothing more, maybe i should just the isolutor things, but i am 90% sure now thats its shortage. Any more suggestions would be great. thx

 

[YOyoYOhowsDAjello]

Well, before you do that, are you absolutely sure you have everything plugged in that you need (I'm thinking the 12V connector on the motherboard specifically)

So you only have the bare essentials connected right now and it's still not working?

 

[Jiggz]

With the back plate being metal you need to put an insulator between the plate and the mobo like a plastic sheet. Even plastic lamination sheet will work. But to make sure this is the problem, dismount the mobo from the case and insulate the back plate from the mobo. If no serious damaged had occurred yet, the mobo should post at least. If it still does not boot then you could be SOL! The mobo could have been fried when it got shorted. Goodluck!

 

[Ausm]

Originally posted by: clkio
I just bought a brand new case, and a brand new thermalright xp-90 heatsink, I just finished removing everything from old case and putting it in the new one, also finished installing the new heatsink on the cpu. but the computer won't boot. The screen is just blinking, and I also notice that the cd-rom turns on and off, on and off, and so on. what could be the problem?

Try This

http://forums.anandtech.com/messageview...atid=27&threadid=1564569&enterthread=y


Ausm

 

[clkio]

okay guys, I removed the mobo from the case, and put it on a cardboard with the video card, ram, and power supply connected, I fire it up and everything is OKAY now the short is happening between the backplate and the case, not the mobo, because I left the backplate connected to the mobo but on a cardboard this time and everything works. Now do I need to get an isolator between the mobo and plate, or plate and case? because to me it looks like I need isolator between backplate and case, it will be much easier from having it between mobo and plate. ANy suggestions are appreciated. thx a lot guys.

 

[ionoxx]

I'm not sure if it'll work but a anti-static bag? Or are those conductive in any way?

 

[bocamojo]

Make sure you are using standoffs in your case. Some people just use screws and screw their mobos right onto the case, without standoffs. This is a sure way to get a short. That may be the case for you, so I would just check and make sure.

 

[Ausm]

Sometimes standoffs need to be "moved" or removed depending on the bolt down pattern on your particular mobo. Make sure the stand off is not resting against ciruitry instead of an open hole which is designed for the standoff. I seen someone fry a mobo doing this once it had a 4 inch flame coming right off the mobo

If you have a standoff slight misaligned it is best to remove it but if you need it for stability superglue the "rubber" washer on the standoff then assemble your mobo to it.



Ausm