How do I replace the video card on my HP Ominbook 6100?

After 5 years, it's a pretty safe bet that the ink has dried up..
Here's a link to the HP how to videos: https://support.hp.com/us-en/product/hp-designjet-z6100-printer-series/3338748/videos
And here's the main 6100 page, with links to the manuals and other info: https://support.hp.com/us-en/product/hp-designjet-z6100-printer-series/3338748

here is a link of the manual on how to set up your wifi on the hp 6100 very easy to read
http://h10032.www1.hp.com/ctg/Manual/c03246247.pdf

I'm only guessing here, but did you set it up for Smart Card Authentication? If so I guess if the card reader hardware fails then so does Authentication unless replaced. Anyway I'm keen to hear the perfect solution for your Laptop problem.

you must download and install the correct drivers for your graphics card.

No need for extra memory, your onboard video card is truly ancient- replace it with the best PCI-E video card you can buy.
One like this
http://www.newegg.com/Product/Product.aspx?Item=N82E16814131359

Did you try this driver scaning tool from Averatec page:

http://www.trigem.com/us/support/drivers.asp

hi there should have been a cd that came along with your card. u insert this disk windows automatically detects the disk and installs the driver. if thats not the case then go to mycompter->right click->properties-hardware-device manager there u wil l find a yellow uqestion mark in your display adapter u click that and click connect to internet to find my driver. then windows automatically searches the right driver.

get in to bios by pressing F10 generally in all hp laptop that the way yo enter bios and then press F9 to reset default and then press F10 to save and exit and it will restart the system and chk

Maybe you can google the HP 6100 battery hash code in Google.

Just click here : http://www.google.co.uk/search?hl=en&newwindow=1&q=HP+6100+hash+code&btnG=Search&meta=

Hope you can get the answer. Good luck.

A - PNY VCG7300SXWB GeForce 7300GS 256MB 64-bit GDDR2 PCI Express x16 Video Card will work - about $30.00 or any other PCI E x 16 Card