I try to get a new emachine T1100.How can I get this computer? Thank you.

PC generates three long beeps (1 Second Cycle three times then 2.5 Secondds Pause) when there is Memory (RAM) Error. Try inserting DIMMs again. Make sure that the timings (Clock Speed) of DIMMs are compatible (matches) with your motherboard.

This is an XP machine, which is no longer supported. I recommend backing up your personal data asap, and plan on moving to a newer machine and OS. If the machine won't boot, and you have important files on it, you could purchase a USB Hard Drive Adaptor, pull out the hard drive, and copy any important files to another machine. Good luck.

Forgive me if my first (educated) guess may be off, but the 4-pin connector for which your can't find a connection may go to your
system disk hard drive - all Emachine towers have a HDD (hard disk drive) bootable system disk - and it needs power to allow your T1100 to boot.
The system disk (your only bootable hard drive) is hidden (a little) in a metal enclosure in the front of the tower. The T1100 has a 20GB HDD, and in the "My Computer" display, it appear as "Drive C:", and is powered by a standard 4-pin power connector.

The cheapest. They should all work. You can cannibalize one from an old computer.

MISSING NTLDR FILE
To repair missing or corrupted system file/s, boot up with the Windows installation CD then –
Press R to repair when instructed.
Press 1 or Enter to repair the C:\Windows folder.
Then type chkdsk /r and then press Enter.
The repair process will take quite a long time.
http://www.fixya.com/support/r4482455-repair_windows_xp

Your emachines eMachines T1100 only supports modules made with a specific type of chip. Should you find what seems to be the exact same memory elsewhere for a lower price, it is very possible that the cheaper memory will not work in your computer. From what I see you should use straight PC-133 Try a site like Kahlon.com-they make sure it works with your computer as would kingston or corsair...
Your maximum amount of ram is only 256mb total.
hope this helps...good luck- please leave a rating...thank you kindly

If it was a storm that blew out your network card, it is possible it also took the slot your network card was in along with it. Try installing your network card in a different slot. If this does not help, please let us know and post which operating system you use.

Thank you for using the fixya forums!

E-Machine Support site for your machine Model:
http://www.emachines.com/support/product_support.html?cat=Desktops&subcat=T%20Series&model=T1100

It sounds like the hard drive has been wiped or is dead or not connected. Check the power and control cables to the hard drive. Check drive with a maintenance diskette or CD. Replace drive if bad. If wiped or replaced, you need to re-install an operating system, such as MS Windows-XP, or Ubuntu (a free, downloadable, Debian GNU/Linux based operating system with a Windows-like user interface).

you need to install driver before putting the graphics card in