NTSC ED64 v2 with firmware 2.21 and OS 1.22 freezing up constantly.

I'm having issues with mt ED64. It constantly freezes up playing games. Here's the info on my version: V2.0, firmware: 2.21, OS: 1.22, type: NTSC, assembly date: 1/29/2012, assembly time: 10:44:30 P.M. I played Conker's Bad Fur day with it first and never had freeze ups even though it would get blazing hot in the case. I took it out and run my N64 open air to keep it cool as well as the ED64 cool too. I never had the ED get hot again or freeze up this way. It was only after adding more games did it start this. It freezes when playing these games: Monopoly 64, Mario Cart 64, Monster Truck Madness 64, Super Smash Bros. It plays super Mario 64 and Conker's Bad Fur Day just fine still. What gives? The music still plays but the screen freezes.

EDIT: I think the ROMS are all NTSC (U).

Another EDIT: figured out the freezing issue with N64 games, the console was overheating. I'm running a fever and cold. Have the heater going. Just checked the temp and it is 90 degrees in here. I put a cooling fan on the heat spreader of the N64 and no more freeze ups.

On a side note, the NES emulator always freezes up with this code displayed in black boxes:

top box:
Exception 0x0C at PC 0x80002B94

second box down:
badvaddr=0xFFFFFFFF

left box:
at=0xA4600000
v0=0x00008001
v1=0xFFFFFFFF
a0=0x801B7910
a1=0x8000A820
a2=0x8000AB80
a3=0x80003F1C
t0=0x00000593
t1=0x80002B44
t2=0x80009EE4
t3=0x00000001
t4=0x0000001E
t5=0x00000021
t6=0xFFFFFFFF
t7=0x00000000

right box:
s0=0x000000B1
s1=0x0000B940
s2=0x00000004
s3=0x00000000
s4=0x000000B4
s5=0x000000F9
s6=0x7FE486AF
s7=0x801BA110
t8=0x00000000
t9=0xB282146F
k0=0x005FBCC6
k1=0xFFFFFFFF
gp=0x00000000
sp=0x34000000
ra=0x8000DC54
s8=0xFFFFFFFF

It does this with all games. The code may change but this one is from Super Mario Bros. 3. Any one with ideas on my issues and how to fix them please help.

 

i wonder if nes emu will work if you will use empty sd card where only emu and few games

 

I'll give it a try eventually. Running out of SD cards. Need to get a big stock.