Further to what my colleague has said, that Dell E150 did of course have a DVD/CD drive, so one option is to put another DVD drive in or connect an external.
However as we have said, you really need the XP CD or the Dell reinstallation disc.
You can as rshaffer61 has said borrow an XP CD of the same edition as the O/S
OR if you have a DVD drive we can try the downloaded recovery console. The reason for the difference is that the downloaded console is ONLY the console and therefore we cannot copy files from the CD to the hard drive using the console only
Neither as explained can a repair installation be done.
Here is the link to the E510 user manualhttps://docs.google....qmID6mrwS6Tqxtw
page 85 deals with removing hard drive
If you do that and connect it to another computer in an enclosure or docking station, then you may
1. Obtain your data - ie your doc s, images etc. so that those are secure
Providing the drive is OK and it is only hal.dll , that frequently is bootcfg file is wrong and hal.dll is not really missing or corrupt
then with the drive connected to another computer you can access your data.
If you connect it to a windows computer running XP (Preferably) and run chkdsk on it, you may JUST strike lucky.