No Start up /no keyboard /no monitor signal.

Hi
I have read the posting rules and hope i am following them,i have tried searching for a similar fault via other posts but i cant find any that cover my fault condition.
I am presently using windows XP , recently my computer just switched off the keyboard and stopped sending a signal to the monitor,the fans keep running but the green light on the front of the comp has gone out and the amber light is now on.
If i do a restart the comp goes through its initial checks ie: green light on front comes on ,green lights on dvd drives come on and go off again then the comp light goes amber and it just sits in this state ,no signal to the monitor,no power lights on the keyboard.
Could you please advice me on any probable causes and hopefully any fixes for this
Thankyou

 

Posting your computer specs including motherboard, CPU, video card, and the brand name and wattage of your power supply would be very helpful.

How old is this computer?

 

The power LED on Dell computers will change to orange when there is a serious problem.

 

hi,
my system specs are as follows

Description Specification

PC Pitstop Active X Build 211
Browser MSIE 8.0
System OS Windows XP Home SP3
System OS Install Date 12/23/2006 2:51:12 PM
System Make GBT___
System Model AWRDACPI
System Serial Number
Main Board Make Gigabyte Technology Co., Ltd.
Main Board Model 8KNXP
Main Board Version x.x
Main Board BIOS Award Software International, Inc. Award Modular BIOS v6.00PG GBT - 42302e31 20031105
Processor Description Intel Pentium 4
Number of Processors 1
Processor Clock Speed 3200 Mhz
Graphics Description ATI Radeon HD 3850 AGP
Memory Installed 2048 MBs
Memory Slots 4 slots
Memory Configuration 512+512;DIMM
Drive Name (C)
Drive Size (C) 30890 MBs
Drive Format (C) NTFS
Drive Name (E) User Data
Drive Size (E) 45425 MBs
Drive Format (E) NTFS
Drive Name (H) New Volume
Drive Size (H) 190779 MBs
Drive Format (H) NTFS
Drive Name (I) New Volume
Drive Size (I) 114494 MBs
Drive Format (I) NTFS
CD-RW Model SONY CD-RW CRX320E
CD-RW Read Speed 9173 KB/sec (52X)
CD-RW Write Speed 9173 KB/sec (52X)
DVD-RW Model SONY DVD RW DW-U18A
DVD-RW Read Speed 7056 KB/sec (40X)
DVD-RW Write Speed 7056 KB/sec (40X)
Monitor Model HSD 245311
Monitor Resolution 1600 x 1200 pixels
Monitor Screen Size 15.6 x 9.8 inches
18.4 inches (diagonal)
Monitor Manufacture Date December 2006
Monitor Serial Number 5527

i have tried inserting the original start up xp disc ,the disc drive does appear to reading but still no signal to the monitor,no life in the keyboard.

i have checked for lights on the hard drives ,motherboard etc and they are on.

I tried inserting my flash drive directly into the usb port on the motherboard and it did not light up

 

hi ,it is a custom built system of around 5 years old,i have taken the connections out and re inserted them and still no joy.
if it helps at all i tried inserting my flash drive into the motherboard usb port and it didnt light up as it normally would.
the mother board lights are on and the fan is running there just seems to be no power to the usb's .
could this be a virus or trojan that is shutting off this part of the board?

 

Hi Have tried as suggested
Keyboard -toggling has no effect

Monitor-no response(it normally turns itself on as the comp boots up,now there is no response ,if i manually turn it on then on screen msg "no signal please check cable ")

PSU- i have tried un plugging and re plugging all cables from PSU to components with no change.
hard drive /motherboard/graphics card/all light up fans all running

 

I didn't see any info on your power supply, normally you should see its specs when you open up your case. You've already checked the the connector so, I really don't think that is the problem. On a new just put it togather it might be. Ive had that happen to me once or twice. See if you can get a good power supply for a friend. Insure its the same power out put or greater.

Or see if some one you Know is willing to let you test your Graphic card out on there system. Be aware that they need a system with AGP. If it works then have your power supply tested, at lease most computer shops will bench tham for free (at lease they will here in the US).

Or disconnect all but your Boot drive and your dvd rom, if your system is running IDE make sure that the jumpers are set to master. Doing this will cut your power consumtion down and you might beable to boot up your system.

If you now can post then go into BIOS normaly you just hit delete a couple of time to enter BIOS. There you should see a hardware monitor some where.

Take a look at the numbers that are being posted i.e. +12, +5 and +3.3 remember that they should be within 5%, but some boards do have problem and they don't report the proper number. But if they are with in the 5% and temp seem to be alright. exit and let it boot in to windows.

Exit window and start to add your drive back into the system (one at a time) until your system starts to have problem. Note the drive or component that caused the problem. Now you can start over, disconnect every thing again i.e. Drive assuming it was a drive that caused the problem, connect it so that its all by its self and boot up again, go into BIOS and see if it see your drive if so then odds are its good and your power supply is to weak to handle all of the devices you have connected.

If you have a sound card installed remove it also.

Then again if thats to much work, pull the power supply have it tested and Replace it if need be. Im pretty sure its your power supply that has gone or is going bad. If you do need a new one get one with more wattage and that the specs are good.

You didn't mention what kind of work you do on your computer but the better the power supply the least amount of problem you'll have.