If I recall correctly it takes long to post if it overheats or there are hundreds of gigs ram installed for first time. You can try reset the CMOS may be it help. But in general GPU should not disable ILO graphics, I had both. I can try to run my blade again in about 2 weeks.@Vit K Managed to make it work. Booted perfectly but took almost 20 minutes to go through post.
Unfortunately after that, I tried to install a GPU in the pcie slot and since then I get no image from the remote console (even after removing the GPU). VSP through ssh doesnt return anything either. Any suggestion?