Hello. I received a Compaq Presario 1620, needed to do a "hard reset". The machine came on completely. I began to run a "defrag", closed the machine while it ran, and now the monitor will not work. External monitor works fine (F+F2), system is running, but how do I get the LCD monitor display back? The F+F2 does not bring it back up..

Hi ladurisjames...

Your computer sounds like it is loaded with "junk"
Lets start by doing a disc cleaning, then a defrag of the hard drive, and then get rid of unwanted pictures, programs, etc.that you never use anymore from your computer.
Last resort will be a System Restore.
-----------------------------------------------------------------------------------------------------------------------------------------------1...Disc cleaning...Click on Start>All Programs>Accessories>System Tools> Disc Cleanup
2. Defrag the Hard Drive...Click on Start>All Programs>Accessories>System Tools>Disc Defragmenter.
3...Delete any unused programs,files,pictures...etc.
4. Final resort: System Restore...this will restore your computer to a time when it was operating good, you have to pick the date when it was running good....Click Start>All Programs>Accessories>System Tools>System Restore
After you have completed the above your computer should run faster.
Please take time to rate me

First make sure you didn't leave a usb key inserted into the laptop. If not, go into the BIOS and verify that the hard drive is being seen by the laptop. Some BIOS require you to run a detect so it can properly identify the new hardware. You should also verify the boot order while you are in there just to make sure the hard drive is selected as a bootable drive.

Yes. Run it from safe mode. Press F8 as it boots and choose safe mode with msdos support. Type CHKDSK/F at the dos prompt.

Most motherboards, including the newer Compaqs, have a certain number of identical mounting holes. Power supply will most likely be your downfall. Compaq uses 'just enough' power supplies for their units, like 220 watts on some. Your faster motherboard stuffed with memory is going to require a lot more. My quad core wanted 750 watts or better with 4 gigs of ram plus your hard drive(s), DVD/BLU-RAY/CDRW, don't forget your GPU on your faster Video Card ? The answer is.. Yes, but.. -DellTech1

you can format it by inserting the Windows XP CD and install a new XP OS on the machine and you can also format it externally. I am not sure what it is that you want to achieve ...is the Hard Disk damaged?

hello,
computer slow can be many reasons.
overload programs.
bad RAM or hard disk.
virus infected.
just run regtool to speed up your PC.
http://www.keep-pc-clean.com/

the first thing to check is your hard drive defrag it, then the startup process, then software that you do not need or use and finally run some anti spyware/virus software.

1. delete temporary internet files.
2. run disk cleanup then defrag if needed.
3. if you need help doing these tasks i'l gladly walk you through them.
4. empty your recycle bin

if the compaq logo is also not appering the the issue is with the RAM and the slot is to be cleaned and reinserted the issue will be resolved.

that is not a f drive. follow this
start-run-cmd hit enter then cmd screen write the following command without quotes "chkdsk/f" hit enter then it will ask for yes or no you give yes and close the program and restart, the system will check for hard drive error then you try to defragmentation