My 530 boots up sometimes and when a usb device is attached the screen goes black. Holding the power button shuts the system down but when it is pressed again the green light comes on for as long as the button is pressed but goes out when the button is released anmd the PC won't boot.
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It is often caused by a hardware failure. The first thing to do is make sure you do not have any USB memory stick type devices plugged in. Computers don't like them plugged in while starting. If still no good, unplug all of the devices attached except for the monitor. By this I mean the keyboard, mouse, ANY USB DEVICES/ but leave the monitor plugged in. Try starting again. If it boots into windows normally, press the power button on the computer to make it shut down again, then plug each thing in one by one and repeat to see which is holding it up. If it still won't get past the BIOS screen, you have an internal problem in the computer box itself. Hope this helps
Remove the battery and open the case. Look inside the computer with a flashlight to see if any of the capacitors are busted or leaking from corrosion. The capacitors look like little battery towers, but they are not as tall as the AA or AAA batteries.
If the capacitors are bad, your computer goes bunkers.
Remove the power lead, remove the battery and hold down the power button it would seem to be an issue with the laptop retaining some residual charge which is preventing the laptop from booting. Holding the power button down with no power sources attached will dissipate this charge and allow the laptop to boot when a power source is reattached.
It is becasue of your computer is not properly shut down and so your harddisk has some bed indexing of memory location.
For that you need winxp disk or recovery disk.
Then boot your computer with that disk .
You have to set first boot device as your cd or dvd rom.;
For that when you power up press F1 or F2 or "del" key to enter in bios .
Then go to boot option then sewt first boot device as your cd or dvd rom.
then save settings then put winxp or recovery disk in rom.
Then follow the procedure .
Then enter in recovery console then type in prompt "chkdsk /r"
then it fix error on harddisk.
Sometimes this command fix eror and then after restart windows load normally but sometimes need to repair windows.
So after check this if still face issue just chose "r" when it finds your previous version of windows then it recovers your windows.
Some USB devices seem to cause this problem. I've had it myself. USB devices when hooked up cause the computer to freeze as it hard for USB drivers to be loaded outside of windows. Try updating you windows thru windows update though even updated I still run into the problem sometimes. If updating dosen't work you need to keep the drive unhooked while booting then hook up in windows.