t2341 motherboard jumpers?
448349
Everything you need right here....\n\nhttp://www.emachines.com/support/product_support.html?cat=desktop&subcat=T-Series&model=T2341
362916
Manual for the motherboard.\nIf you don't have the manual, check the motherboard model and find the manual online.
1052858
I don't think you can, first check if you have the manual for the motherboard, if you don't have that forget it because a machine that old had to be set up manually and you need the manual to know which jumpers to switch and how. If you're intent on keeping the machine more memory is probably the way to go, but really I'd just\nsave the money and put it towards a newer machine, there are much newer and faster machines available fairly cheaply from different places like Ebay
640463
you go to your manufactures web site, support. fin dyour particular model computer and the find the bios download in support. download it and the flash program, be very very careful doing this, flashing your bios, if you make a mistake, you will probably damage your motherboard and make it useless. The give you instructions how, but you must follow them precisely
1071489
Probably the best and safest thing to do is get an exact match.  You will likely have to resort to eBay or a similar site.  Dell has used proprietary power supplies and/or power connectors in the past, so you risk frying your new motherboard by putting in a standard ATX bought somewhere else.
376814
Goooogle\n\nhttp://www.karbosguide.com/hardware/module5a3.htm
1037975
you will have to set it in BIOS
542559
Motherboard manual here:\nhttp://www.emachineupgraders.info/dir1/motherboards/socket478/imperial_downloads.shtml\n The model came with a 250W power supply\nhttp://store.ramplus.com/atatrebe25at.html
177786
Well I looked at MSI's site and the picture appears to have a set of color coded pins on the corner of the board nearest the bottom front side of the Tower.  You should be able to plug the power cable from your power button on front of case into one pair of the color coded pins.  Unfortunetly I wasn't able to pull up any type of manual or users guide for this board, so I am not able to tell you which pins.  I would recommend either reading the Silk Screen on the board or the guide to determine the exact pins.
680005
On the motherboard there should be a jumper to reset the bios, short it and turn on the computer.  Or you can remove the motherboard's battery for a couple hours to clear the bios.
646387
Here is the driver download page for your MoBo\n\nhttp://support.asus.com/download/download.aspx?SLanguage=en-us&model=P4P800S%20SE\n\nPick your driver, If you still have problems after you have installed the card driver then it might be a jumper setting problem on the Mobo, Because it seems to be a problem with quite a few Asus MoBo's.
861121
go to the website of the motherboard manufacturer and download drivers
514184
I know you said jumper settings are ok, but what position is the jumper set to on your new drive?  Looked on Compaq/HP and looks like it should be set to cable select.  Make sure to use the ide cable that was originally installed not the new one that came with your new driveas it is correct kind for cs.  New cable may not support cs may be master/slave type.  That may help.  \nSince you did not include what Evo I had to guess a little...\nhttp://h20000.www2.hp.com/bc/docs/support/UCR/SupportManual/TPM_287935_rev2_us/TPM_287935_rev2_us.pdf\nThe link should take you to a pdf about the EVO.  Click on Hard drive installation guidelines for more info.\n\nHope this helps.  If I told you things you already know, then my apologies; I just know that it is easy to over-look something this small when upgrading.
1123946
Check the jumper settings on the motherboard. They may not be set to read the added memory cards. You should have a diagram of the motherboard printed with the paperwork you got with the computer.
708443
Check the master and slave jumper settings. Also go into the BIOS and see if it can detect them.
1024155
ok, to start with it is not your bios, it is not the cables, it is not the jumpers, if any of those were not detecting the drive, windows couuldn't find it in add new hardware, more than likely it is in your registry.\ncheck these tips here, I don't know your operating system or hardware configuration,so I can't be more specific in helping you, but the page might have the anwer\nhttp://www.tek-tips.com/viewthread.cfm?qid=1218041&page=1
403026
Try here: http://www.newegg.com/ProductSort/SubCategory.asp?SubCategory=522