There might be one on the front of the case and some on the back of the case.
Sometimes they are hidden behind a door along with usb ports and maybe a card reader.
It depends on what case you have. If you had put the model number, it would be easy to tell. Take a look at your manual, if you don't have one, then go to there site and get one.
I'll post there website for you.
http://www.compaq.com/country/index.html
The cheapest Compaq Presario desktop PC available is Compaq Presario CQ5110F desktop PC. You can find it on sale when you go to the website of Amazon.
One can buy a Compaq Presario SR2020X Media Centre Desktop Computer from various shopping sites such as eBay or Amazon or an online computer site such as Tiger Direct.
A Compaq Presario V6500 can be purchased from the AC Computer Warehouse for ‚£99. Alternatively a Compaq Presario CQ62-209WM is ‚£298.24 from the Play website.
The Compaq Presario 1200 is a notebook computer. The line of notebook computers was produced by Compaq between the years of 1998 and 2000 and is used as a portable computer.
A Compaq Presario is a kind of a portable computer or laptop which is manufactured by Compaq. You can do a lot of thing in it such as doing homework or office work and going on the internet.
The Compaq Presario V5000 battery will be compatible for laptops that are from the computer company, Compaq. You can find these batteries online in Amazon or eBay.
Depends on how you want them to be compatible.
The Compaq Presario CQ5210F has only one legacy PCI slot,but it has three PCI Express slots (1 x16 and 2 X1)
The Compaq Presario is a good computer for a teenager because it's a relatively inexpensive choice with good performance. The screen size is adequate, it's lightweight and intuitive.
The Compaq 5000 only came with a CRT monitor (the Compaq FS740) , but any standard LCD monitor with a VGA connector can be used.
The HP Compaq Presario CQ5110F Athlon X2 7550 comes with 3 GB of RAM and can be upgraded to 4 GB.
how to bios update compaq presario v3000