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The only small pinhole in this small form factor computer should be in the front of the c/dvd drive. You might be able to get to it by opening the spring loaded door in front of the drive. It's possible the hole might be obscured by the computers front bezel, in which case you would need to disassemble the front of the computer to get to the small pinhole.
Phase 1 After power button pressed, computer will detect 5 components : 1. Power supply - OK (enough power) 2. Main-board - OK 3. Processor - OK 4. Memory - OK 5. Video Card / VGA - OK == beep sound .. (1 time) or on the monitor, display appears BIOS ==
The characteristics ofdamage topower supply 1.Power supply fandoes not spin
Videopower supply fannot spinning
If thepower supply fanis not spinning,the possible cause ofdamage topower supply.Solution,replace the power supply.
How to check thedamage topower supply 2.Power supplyis weak(resulting voltagepower supplycan not turn onthe computerorthe voltageis less) The characteristics ofdamage tothe processor Normalfanwithoutprocessor Normal fan with processor
You may have issues with upgrading the motherboard on a Small Form Factor (SFF) desktop computer. The issue is not the space for the motherboard - it is with the proprietary power supply that HP/Compaq use with these small desktop computers.
You will be forced to use the existing power supply which may not work (i.e. have the correct power connectors) for the new motherboard.
Let us know what your goals are for the motherboard upgrade (have more RAM installed, add a SLI video card, faster processor, etc) and we can assist with what is and is not possible.
It could be your power supply, but it is more than likely the computer is over heating. Clean around the fan, and vaccum around the grid air openings. Make sure you have about 6 inches clearance around the computer. If possible try putting a small fan blowing directly on the computer to determine if it is overheating.
The possibility of fixing a USB drive isn't good. The contacts that connect the USB connectors to the drive itself are very small and very hard to solder. (they are soldered by computer from the factory). I would by more worried about the USB port on the computer that it would still work after you pull the pieces of the connector out of that port.
On most CD players and writers a small hole only big enough for a very small pointed object is located usually on the right side and slightly below the tray. Straighten out a paper clip and put that into the hole and press until you find some small resistence. Do not overpress but do press until you feel a small click. Generally the tray will open at that stage. Suggest you remove whatever object or media is located in the tray at the point and reboot the computer. Hopefully the tray will then operate on its own as it should but it is possibly that the drive mechanism for the tray is dead. Test before replacing the drive. The above procedure should only be done with power ' not applied ' to the unit since it may be possible to cause an electrical short on the drive using a metal paper clip.