Installed motherboard, no signal to monitor

Hi folks. I wonder if you shed some light on this..

I have built a computer using the following hardware:

Lex BN790E Motherboard
      (200/266 fsb
      5 PCI
      1 AGP
      4 USB
      Sound on Board
      Supports CPU's Above 2 Gig
      AMD XP1800+ Processor
      Heatsink & Fan)
256MB DDR PC2100
Samsung 60GB HDD

I installed the motherboard in my new case with new power supply. The CPU was already installed and I attached the heatsink, fan and fan lead to pins. I installed RAM, connected speaker/power switch leads and connected power supply to mainboard. I put the video card in PCI slot 1 and plugged monitor in.

When I switched on the fan started, but no signal to the monitor. I waited for a minute, still nothing. No beeps either. I tried an AGP video card, known to be working, no joy. I tried the card in all PCI slots in desperation, no joy.

I checked all the jumper settings again. Ratio jumpers off (setupable in BIOS (is this correct?)). CMOS okay. CPU front side bus on (100MHZ - default).

All the hardware is brand new apart from the original video card which is known to be working.

What d'you think? Any comments will be greatly appreciated.


Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Have you reseated the RAM?
When you boot up, does your hard drive / floppy drive / cdrom drive show signs of life?
AljeeboAuthor Commented:
Hi, I have reseated RAM and also tried another chip of same spec. The hard drive/floppy/cdrom all functioning. Could it be the CPU? I had a look at the back of the mainboard and noticed two pins from the cpu socket were joined by solder. Is this a fault? I guess it wouldn't do anything if it was?
Ultimate Tool Kit for Technology Solution Provider

Broken down into practical pointers and step-by-step instructions, the IT Service Excellence Tool Kit delivers expert advice for technology solution providers. Get your free copy now.

AljeeboAuthor Commented:
I've also tried the memory on another mobo and it works fine. It's gotta be the CPU?? What options do I have re. testing the CPU?
CPU or Mainboard may be defective or damaged.  Depending on who installed heatsink/fan on mainboard i would check there.  First make sure heatsink is not installed 180 degrees backward with the notch for the mainboard socket in wrong direction if this is the case you likely have a broken mainboard.  XP heat sinks can be difficult to install and even when heatsink is in correct position the mainboard can be damaged from too much force.  You can also check the chip for small cracks on the corners which is somewhat common on amd products.

Hope this help some

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
No comment has been added to this question in more than 21 days, so it is now classified as abandoned.  I will leave the following recommendation for this question in the Cleanup topic area:

Accept: Fdisk

Any objections should be posted here in the next 4 days. After that time, the question will be closed.

FriarTuk, EE CleanUp Volunteer
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today

From novice to tech pro — start learning today.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.