'MBR' text shows before boot. how to delete?

I attempted to dual boot an ubuntu 12.04 with windows 7 on my hp mini 210 netbook

long story short i got messed up with the process and made windows 7 running again

as a result 'MBR' text shows up with blinking cursor below

i've tried removing that using linux commands but no luck. maybe this time windows can do it

how can i remove this?

Any help is appreciated

Make sure Win7 or it's 100mb System Reserved partition is marked Active, then run Startup Repair - Run 3 Separate Times.
Mark Partition Active