My Win7 Pro 64-bit system (8GB, 1TB, 3.2ghz Intel Xeon w3565) was working fine. I wanted to add Ubuntu 13.04. I booted from USB, selected try me, everything booted fine and I got my Unity desktop. I finally installed Ubuntu alongside Win7.
Grub comes up with Ubuntu as the default. I scroll down and Windows boots fine. I reboot and let it try Ubuntu. Nothing. The screen goes black and I have a blinking cursor in the top left. It hangs. I reboot and go to advanced options and choose recovery mode.
I get output but again, it hangs. The last few lines I see are (times are truncated by me)...
[0.51] ACPI: PowerButton [PWRF]
[0.51] ACPI: Requesting acpi_cpufreq
[1.49] Refined TSC clocksource calibration: 3.199.999 MHz.
[1.49] Switching to clocksource tsc
Any ideas on how to fix? Or even how to just uninstall Ubuntu altogether? I tried the os-uninstaller, but that doesn't seem to work [exist] with a 13.04 usb stick. I guess I can try putting an older version of ubuntu on the stick and see if I can install to the os-uninstaller.
[edit] I successfully uninstalled 13.04 by booting linux-secure-12.10-64bit.iso from USB and running os-uninstall.
I also tried the boot-repair tool, but all that did was add another Win7 entry into the grub menu (one for dev/sda1 and another for dev/sda2, and both work and boot to Win7... http://paste.ubuntu.com/5616403).
From what I can tell, I don't have UEFI, just normal BIOS.
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