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Asked on 26/8/2002, 19:3

When I turned my PC on last night, it would not boot. It's an HP Pavilion xt936, 128 meg ram, plenty hd space available on a 40 gig drive. Only modifications have been adding a sound blaster live several months ago and adding a diamond viper about the same time. Forgot that I did change to an optical mouse, too. Machine has functioned well until last night. I got no POST, just a blank monitor.

Removed mouse, put original equipment mouse back on. Unplugged all peripherals, such as scanner and USB stuff. I reseated hd cable, changed out the monitor to a working sony, tried again with no success. Checked all cards, found all to be properly seated. Removed sound blaster. Tried again. Still have a blank screen, with no boot.

Seems to be getting power to the keyboard, since the keyboard light is working. Any ideas which way to go now? Thanks so very much!

Reply Posted on 30/8/2002

I had a similar problem a few months ago. I firstly made sure that all cables where in place properly (ie none had come out) especially the power cable to the motherboard.
Secondly, look in the manual for your motherboard jumper settings and try resetting the BIOS memory - it could be that this has been changed some way and this is causing a problem.
Thirdly, try contacting the motherboard manufacturer or the BIOS manufacturer (try http://www.helpforce.com/main/elinks.html for links to them.) It seems to me that either the motherboard, BIOS or possibly RAM (but ram is least likely to me) is malfunctioning. Have you recently moved the computer, is it near a raditor or in a damp enviroment?

Reply Posted on 31/8/2002

A common cause to this kind of thing is an earth loop on the motherboard, this would cause the motherboard (+keyboard) to get power but not start the boot sequence, i would try taking the computer apart, take the motherboard out of the case, and part by part puting it back in making sure that u have plastic washers between the motherboard and the case where the screws attach the two together!!! if it was me i would set the computer up outside the metal case perhaps on a table and try it like that! from experience i would be surprised if this doesnt work!!!

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