I misplaced my software for hp 3510 and need to reload

check out HP support for this model
HP Deskjet 3510 All in One Printer Software and Drivers

Download from here Stacey.
http://h10025.www1.hp.com/ewfrf/wc/softwareCategory?cc=us&lc=en&product=5157483

Unplug the USB cable to the printer. Uninstall the HP printer software. Reboot. Reinstall the HP printer software and WAIT until the installation program tells you to plug in the USB cable.

replace the black ink cartridge.

Hi,
Software, and Drivers (Windows and Macintosh)
http://www.printerdown.com/hp-deskjet-3510-drivers/
Thanks

yes......log into the website from which you brought.....and request for new copy

if you misplaced the disk, you can download drivers & softwares you need at www.hp.com just go to the support & drivers page, select your product model and all product support you need will be there. hope this helps.

You have two choices, either you install Windows from a generic Windows install CD, then you download and install all drivers from HP website here:
HP Support & Drivers
Or you contact HP and purchase a recovery disk here:
HP Customer Care 24/7 Online support

Hardware compression is more efficient and faster than software compression and under normal constancies you won't want to do that. Having said that if your drive allows it you would need to download and install a software utility made by your tape manufacturer. That what you will use to turn off that functionality; not a setting on the PC or the backup software. Bottom line is you will need to talk to IBM support. Probably not the answer you wanted to hear but I just went through this with HP a few months ago. They have a general purpose utility that turns off the hardware compression, does a drive analysis, a cheapo write current alignment, firmware update and a few other neat tricks.