Nexus 5 issue

Anyone own a nexus 5, had mine for about 2 yrs and now it will not boot up. Tried pressing power+both volume buttons at the same time. Hold them for about 10 seconds, then try to boot.
Go into bios and reset and all it does is either crash or stay on the google logo till it dies of battery power.
In the bios tells me failed to mount cache
can't open/cache/recover log
keeps saying that in the bois there ya go 🙂 the beauty of nexus devices, they're crazy easy to fix software problems!

Okay will go on that site and see if i can get it done right.
Thanks for the site,  will let you know