Won't boot up. gets error ercovery screen - eMachines T5224 PC Desktop

You should be able to do a clean install of Windows. Just insert the installation disc and press any key when indicated. Optical drive needs to be the first boot option. Go into BIOS and change it is not.
As for disc, you have to use the same Windows version as indicated on the MS Product Key sticker, because of the serial number.

error repair tool at emachine

http://www.wiki-errors.com/download.php

Go into the BIOS setting and in the boot options, make the USB the first boot device.

It' most likely that your hard disk drive is defective. Try to boot from a CD\DVD disc, if it does, you have a problem with your hard drive.

HDD problem, try to fix boot record and test HDD with Hierens Boot CD

Windows won't start up? Well, try this Download Tenorshare Data Recovery from its offical site and install it. Burn it into CD/DVD, or USB flash, put into the computer you need to repair, Bios setting. It can make sure your important data will not lose. Best of luck
Related: windows won't start

I had the same problem. I clicked on F2. in Bios screen I press f10 (save and exit), and windows started.

step one, big battery out? skipped that?
step 2, a good power pack , that means 19vdc on those 2 pins.
bingo BIOS screen now work ,yes?
step 3, try an external VGA screen at the P15 VGA jack there
screens work now (BIOS first) yes/no?

remove DVD, drive
and all USB devices
there booting with only 1 memory stick. (got more?, try each 1 by 1)
black screens of *****'.

the lack of flash codes, Implies Power pack is dead. or CPU overheated, and selfshuts down. that fan going dead tells
me the power park is dead.

http://pcdied.com/#black-screens

PLEASE GIVE ME UR PROBLEM IN DETAIL WITH THE EXACT ERROR SO I CAN HELP U BETTER

The blue screen means the system is experiencing a fatal error... a error from which it cant recover.... so while booting press f8 and boot using safe mode... then analyse the startup programs of your system using Start->Run and then typing msconfig in the window that appears and then going to the startup tab... one of your latest installed program might be misfunctioning....