Laptop won't boot into post-screen

[Heatproofsean]

I bought a M4 64GB SSD for my laptop:

Dell XPS 17" (L702X)
Intel i7 (2500 i think)
4GB RAM
(Port 1)500GB HDD with OS still installed. Has a small partition for Linux
(Port 0) SSD
nVid 550m

I put Win7 on a USB to install x64 verson. It installs fine and detects the SSD fine. It reboots but after the first screen (before BIOS etc) it just stays black with a flashing "_" in the top left.

I've double checked bios and the HDD's are in the correct boot order. It's also in AHCI if that makes a difference. I also speficied boot order at start up by spamming F12 and chose the SSD.

So I can't really figure this out. I've formatted and installed the the OS onto the SSD about 4 times and nothing changes. Anyone got any suggestions?

 

[deanolfc]

Try
Disconnect all Hd's and none essential usb's insert windows disk and choose repair mode instead of install.
Go to command prompt type in bootrec.exe Hit enter ,4 options then listed. you want to type.
bootrec /rebuildbcd and hit enter

 

[Heatproofsean]

no luck

 

[soundesciple]

Try unpluging the hdd and booting up with just the ssd in.