My Computer will NOT start up blank screen?

Is it power on (BIOS password or Windows Password?

Clearing Forgotten BIOS Passwords (from Owners Manual Page 109)

CAUTION: To guard against electrical shock, always unplug your computer from
the electrical outlet before opening the cover.
1
Shut down the computer through the
Start
menu (see page 27).
NOTICE:
To disconnect a network cable, first unplug the cable from your computer and then
unplug it from the network wall jack.
2
Turn off any attached devices and disconnect them from their electrical outlets.
3
Disconnect the computer power cable from the wall outlet, and then press the power
button to ground the system board.
4
Remove the computer cover (see page 74).
5
Locate the 3-pin password jumper (see page 77) on the system board, and then attach
the jumper to both pins.
When you receive your computer, the jumper is attached to only one pin.
6
Replace the computer cover (see page 99).
NOTICE:
To connect a network cable, first plug the cable into the network wall jack and then
plug it into the computer.
7
Connect your computer and devices to electrical outlets, and then turn them on.
8
If you are prompted to press <F1> to continue, press <F1>.
9
After the Microsoft Windows desktop appears on your computer, shut down the
computer through the
Start
menu (see page 27).
NOTICE:
To disconnect a network cable, first unplug the cable from your computer and then
unplug it from the network wall jack.
10
Turn off any attached devices and disconnect them from their electrical outlets.
11
Disconnect the computer power cable from the wall outlet, and then press the power
button to ground the system board.
12
Remove the computer cover (see page 74).
13
Remove the password jumper.
Attach the jumper to only one pin so that you do not lose it.

what makes you think its usb overload ?

Check your computer's power cable and the power cables to any devices connected to the computer. Make sure all cables are firmly plugged into electrical outlets and into the computer and other devices. If you have an extra power cable for your computer, swap it in to see if your computer's power cable is the problem. Remove your computer's battery, if it is a laptop, and connect the computer to a electrical outlet to see if it will start up. Sometimes a discharged battery will prevent a laptop from powering up. If your laptop still won't power up, remove the power cable, replace the battery and try to run the computer off battery power. Unplug your computer and plug a lamp or radio into the same electrical outlet and see if that device works.
If the lamp or radio doesn't work, the outlet is the problem. Unplug your computer and open your computer's case, if it is a desktop system. Look for loose cables, cards and connections and attach them firmly. Blow out any dust with a can of compressed air. Also, check your computer's memory chips to make sure they are all plugged in and seated properly. Close the case once you are done and plug in the computer. Disconnect any USB devices connected to your computer and try to power up the system. Sometimes a USB device not connected properly will stop a computer system from powering on. Disconnect any new devices recently added to your system. Sometimes new devices will conflict with other hardware within your computer and cause an overload on your computer's power supply. Disconnect any other devices connected to your computer such as the keyboard, mouse, monitor, printer or scanner and plug your computer into a electrical outlet by itself. Check to see if the computer works. If does work, shut it down and connect just one device, such as the monitor. Turn on the computer and monitor and see if everything works. Continue connecting devices until you find the one that is stopping your entire system from powering up. Hope it helps.

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Test your PSU or replace it if your power supply units fan is not working your PSU is faulty

One bad lead can cause a computer to continue on a cycle or to shutdown or fail to detect/ boot up a computer hard drive

Test all leads that attach to your hard drive including electrical extensions,IDE,SATA

the leads from your ((motherboard to your hard drive)) make sure they have a secure connection and are not faulty or just replace them there probably old and faulty
make sure all leads that are attached to your drives dvd\cd 3 1/2 inch floppy have secure connections and are not faulty even the electrical extensions or just replace them they are probably old and faulty a computer needs its connections to have an end so any faulty leads will end up with a computer error

hope this helps

We will see if the problem is due to the static charge accumulated on the laptop. Disconnect the power cable from the laptop and also take out the battery. Also, disconnect all the external devices attached to the laptop e.g. external mouse, keyboard, printer. Now keep on holding down the power button on the laptop for the next 30 seconds. Put the battery back and plug the power cable. Now try turning on the laptop and let me know if it works. Thanks!

Disconnect all your speakers from the receiver. Turn the power on, and see if it stays on. If the unit shuts off with all the speakers disconnected, then you most likely have a faulty unit, and it will need to be repaired or replaced.

If the unit stays on with all the speakers disconnected, then you most likely have a bad speaker or a bad connection with the speaker wire.

Starting with one speaker, hook it up, and turn the unit on, and again see if the unit stays on, or if it shuts off. Do this until the unit shuts off when you connect a speaker.

Then disconnect all the other speakers, and leave the suspect speaker attached. Again, try to power up the unit. If it fails with that speaker attached, but works when it is not attached, then that speaker is your problem.