my laptop is a dell xps 15z and a couple of days ago I was formatting it with the disk dell gives you with the system. So... I inserted the disk, and formatted, and in the installation, I kinda shut it down... so, I opened it up again and wanted to install windows 7 again, and when I go into the installing part, it says "windows cannot install required files. The file may be corrupt or missing. Make sure all files required for installation are available, and restart the installation. Error code: 0x80070017" but I know that it's not from the cd, because it's still brand new with no scratches. Anyways, so I disassembled it, and for some reason, I took the antennas for the LAN card, and when I start the laptop, it tells me to check the cable connection in the LAN , but they're connected. (wait it gets worse...) so, I go ahead, and take out the RAMs and turn the laptop on, and what I heard was 2 beeps. So I put the RAMs back in and turn the laptop on, and the same beeps, they are 2 short beeps, and everything inside it connected oh gosh what do I do???