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| Thread ID: 75976 | 2007-01-16 19:19:00 | Paging all Hardware Gurus | B.M. (505) | Press F1 |
| Post ID | Timestamp | Content | User | ||
| 516492 | 2007-01-17 00:12:00 | Further update: Disconnected IDE cables but made no difference . What puzzles me is that with No Keyboard, No RAM, No IDE Cables (and consequently No HDD or DVD/CD Rom), and No PCI devices all the beeping is coming from me . :blush: Has anybody ever heard of a computer without POST codes? :confused: The other thing is, I have never seen a computer where the CPU fan doesn’t come on at start-up . . The MBs dead then . |
pctek (84) | ||
| 516493 | 2007-01-17 01:06:00 | Sounds like the Mobo/psu to me, the 5v plug, is what is giving you the lights on, however if 12v plug not worky, no boot, no post! | SolMiester (139) | ||
| 516494 | 2007-01-17 04:28:00 | The only time I've heard of a motherboard without beep codes is when the speaker didn't work. Although it does seem like the motherboard is faulty when the chassis and cpu fan don't turn on, obviously the power to these components aren't reaching. Only things to check here, the CPU and motherboard, because fan isn't turning on, CPU could have been cooked and the more tests you do the more damage you may be causing, if these components work, you'd definitely receive beep codes for the other things as long as the speakers worked. Have you reset the CMOS, haven't seen any mention of that even though you removed the battery, it may have not been enough to discharge it. If you wanted to test for a good boot, you'll need the video, ram and keyboard put back. What you should really do though is a barebone start, no CPU, just the motherboard, connect the fans up though, and see if they work, they should work even without a CPU. Check to see if they're not faulty either. If you can't get the fans going, it's a motherboard problem. Cheers, KK |
Kame (312) | ||
| 516495 | 2007-01-17 08:05:00 | Dahhhhhhhh, sorry about the language, you must have heard it, but here’s the problem . :blush: This machine was given to me because it had been to two repair outfits and the owner was assured it wasn’t worth fixing so it was given to me for parts . Well, after all the performance previously documented, I decided I’d plump for the motherboard and replace it with a spare lying in the corner to see what happened . To cut a long story short whilst removing the few remaining wires attached to the Motherboard I noticed there was nothing in the little four pin square socket in the middle of the motherboard . Fosiking around I found the appropriate plug tucked up behind the power supply . So, I fitted it and away we went, good as gold . Only thing is there’s still no beep at the completion of the post but there is a continuous beeping with the RAM removed . . The four pin square plug carries 12v but can anyone explain why this is an extra on some motherboards and what it feeds? :confused: Anyway, thanks everyone for your input and the matter is now resolved . :thumbs: |
B.M. (505) | ||
| 516496 | 2007-01-17 15:12:00 | The four pin square plug carries 12v but can anyone explain why this is an extra on some motherboards and what it feeds cpu power CPU could have been cooked and the more tests you do the more damage you may be causing, if these components work, you'd definitely receive beep codes for the other things as long as the speakers worked . well if the cpu is 'cooked' you aint likely to be damaging it any further . . . . . and as for beep codes . . . . . . . . . . you dont necessarily receive beep codes under ALL circumstances . . . . . . so 'definitely receive beep codes' . . . . . . . . NOT . . . . |
drcspy (146) | ||
| 516497 | 2007-01-17 18:42:00 | Ahh, so that lead is the CPU’s "personal" 12v power supply which explains everything I guess. :D | B.M. (505) | ||
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