Will not boot from disk or hard drive.

Is the monitor plugged into the wall and power turned on?
Is the video output of the PC connected to the monitor?

This error indicates that the system is not able to find a boot-able device to load the Operating System. It could be something as simple as a disconnected hard drive, or it could even be a corrupt hard drive.

You can check if the hard disk is being detected in the BIOS. The key to enter BIOS in E-machines systems are Tab, Del or F2.

If the hard disk is being detected in the BIOS, it could be a faulty hard disk. You can try booting from the recovery partition by pressing Alt+F10 when starting up the computer. If you're able to get into the Recovery Partition, you can try a recovery, but you might lose all your data. If you're not even able to get into the Recovery Partition, you'll need to get the Windows disc for installing the Operating System again.

You can refer to these links for further information:
http://h30434.www3.hp.com/t5/Notebook-Operating-Systems-and-Software/No-bootable-device-insert-boot-disc-and-press-any-key-error/td-p/151244/page/3

http://superuser.com/questions/119307/how-do-i-boot-to-the-recovery-partition-on-an-emachines-d620-notebook

GuruAid

You will need to install the operating system on the new hard drive for it to boot.Also you need to set you're boot order in the bios to CD then the HARD DRIVE.Get the operating system set the bios boot order then install it.

It may cause by loss of connection from your boot Hard disk that has your Operating System..

Give me feed back so i can help more

I Goggled your model and came up with this website: http://www.emachines.com/support/product_support.html?cat=Desktops&subcat=T-Series&model=T6520

Maybe you should try to do a "destructive" restore. when restoring from the recovery disc, you have the option to do a "destructive" or "none destructive" system recovery. if you choose to to non destructive recovery, then any virus that may be on your pc will not be removed and this may be the reason why your recovery always stops half way through. note that this will format the hard drive and you will loose all the files on the hard drive, including photos and documents. if this doesn't work then you should try to find out if you have a hardware problem. you can download one diagnostic software from seagate, that you burn to a cd. you use this as a boot disc, like the recovery disc, to test your hard drive, memory and motherboard to see if you need to replace any components. the most common problem is the hard drive. http://www.seagate.com/ww/v/index.jsp?locale=en-US&name=SeaTools&vgnextoid=720bd20cacdec010VgnVCM100000dd04090aRCRD

The first link is to download the step by step instructions on how to replace the hard drive on your model. The second is the contact link for e-machine ,as I found no restore disk as a download.
http://www.emachines.com/support/service.html#eurpp



http://www.emachines.com/support/product_support.html?cat=Desktops&subcat=T%20Series&model=T2824

Emachines don't use the cable select properties very well. Change your drive to Master, reformat and reinstall the operatiing system.

Pardon me, but NO! The statement, "two things are responsible for booting up computer RAM and Hard Drive" is simply not true.

A hard drive crash COULD cause the symptoms you describe, but that is more indicative of a virus infection. When you say the XP reinstallation disk would not start it exactly how did you use that disk? Attempt to use the repair console? Boot directly from the disk? Attempt reinstallation of the whole operating system? If you attempted reinstallation, do you also have the specific drivers for all of the components E-Machines used when they built your computer (you will need at least some of them.)

Post again with some more details about how you used the reinstallation disk.

Make sure your monitor is plugged in and try again